As Le Chemin uu retour (The Road Home) opens, Rachid Bouhazid is taking his young daughter, Yasmine, to her first day at a new school. Rachid and his wife have moved from Marseille to Paris so Rachid could pursue a new career as a journalist at Canal 7.

At Canal 7, Rachid meets his new boss, producer Martine, and is introduced to his new co-workers, the anchors of Canal 7's morning show, Bonjour!, Camille and Bruno. Camille is warm and vivacious on the air, but once the cameras stop rolling, she is shy. However, she is delighted when her friend Hélène arrives from Montreal. Hélène is in Paris doing a series of reports on life in Quebec. Bruno flirts with her shamelessly, but it's obvious that his heart belongs to Camille.

Bruno at first gets off on the wrong foot with Rachid, and makes amends by taking Rachid to lunch in the canteen. However, Rachid's lunch is interrupted when Martine arrives to tell Rachid his wife has called. Rachid explains that he and his wife are currently having trouble. Sofia is unhappy at leaving her home and family behind. Martine insists Rachid take her mobile and ring his wife. Sofia, however, ignores the phone.

As Rachid is leaving the studio for the day, Camille offers him a lift into the city. He asks if she can take him to his daughter's school. He is surprised when Sofia meets him at the school, and the two share an awkward reunion. Sofia takes Yasmine home, while Camille invites Rachid to her apartment. She is met at the door by her mother Mado, who lives in the apartment above hers and insists on making dinner for them both. Inside, Rachid is fascinated by Camille's book on Les Cévennes and old family photographs of her grandmother, Louise. He asks about her grandfather, and is interrupted by Mado, bearing champagne. Rachid turns down the wine, and makes his apologies, but his family is waiting for him at home. Mado is concerned about Rachid's interest in their family.

As Rachid makes a photocopy of several pages from Camille's book, a torn black and white photograph falls out. When he gives it to her, she says it's her grandmother's wedding portrait. Curious, Rachid asks why the groom has been cut out of the wedding portrait. However, Camille does not wish to discuss the matter further. Chastised, Rachid apologises. However, that night at home Camille uses a scanner and an image editing program to create an unmarred version of the wedding photo. She surprises her grandmother, who still lives in her family home on Rue Mouffetard in the Latin Quarter, the next day with a dinner invitation. Louise, always thrilled to see her granddaughter, calls out the window to her friend Alex, a busker playing an accordion in the Mouffetard Market, asking him to buy a good bottle of champagne for her.

After dinner, Camille surprises Louise with the photo of her late husband, Antoine. Camille asks Louise if she would tell her about Antoine's experiences during the war. A tearful Louise tells her she lost contact with him in 1943. He had sent her a letter from Les Cévennes for her mother's 4th birthday, and was never heard from again. She promises to tell Camille about her grandfather another day, and thanks her for the photograph. However, the next day Mado confronts Camille with the photograph, angry with her for dredging up the past and upsetting Louise. They argue, and Camille storms off. Meanwhile, Louise has fallen ill, and refuses to go into hospital, preferring instead to stay in her home. Mado tells a worried Camille that everything is fine, but she knows the truth: her mother is dying.

Unaware of her grandmother's failing health, Camille is thrilled when Louise tells her she would like to go on holiday with her and visit Les Cévennes. In celebration, Camille allows Bruno to take her to dinner. At the restaurant, the cook and waiter are shocked that the couple appear to be back together. Camille shows Bruno the photograph she made of her grandfather. Camille explains that mother and grandmother never speak of him, but that she overheard a conversation when she was a child and that he was a traitor who betrayed his country.

After dinner, at Camille's apartment, Camille tells Bruno what little she knows about Antoine and why he left his family in 1943. Bruno tells Camille he has a friend who is an historian and might be able to help her. The next morning, Alex the busker appears at Camille's door. At Louise's flat in Mouffetard, Mado tells Camille that Louise died peacefully in her sleep. After the funeral, Camille questions her mother about who tore up all the photos of Antoine, and why. Mado is upset by Camille's growing obsession with her father, but tells Camille that the village in Les Cévennes where her Antoine stayed was called Saint-Jean de Causse.

Rachid is sent to Saint-Jean, ostensibly to do a remote about the area. However, he promises Camille to try and gain as much information about her grandfather as possible. Bruno is having trouble finding his friend, who has moved. Bruno enlists Hélène's help, and she finds David Girard, the historian, on the Internet. However, Girard has little information for Camille other than a photograph of a pass featuring Antoine's photo and the name "Antoine LeBrun." The pass would have given Antoine freedom to travel anywhere in occupied France, and was issued by a high-ranking German officer which seems only to give further proof that Antoine was a collaborator. Meanwhile, Bruno is slightly disquieted when Hélène points out that his friend Girard is a very attractive man.

When Rachid returns from Les Cévennes, it is with no news of Antoine. None of the people he spoke with had any information. That evening, Camille is going through her grandmother's things with her mother, and finds a locked jewellery box. Inside is the final letter from Antoine, which includes the name of the couple he was living with—Pierre and Jeanne Leblanc—and an address. She also finds an intact photo of Louise and Antoine. Camille still cannot believe Louse would love a traitor. Reading the letter, Mado admits that Louise always loved him, even to the end of her life. Mado tells Camille she was wrong to be so opposed to Camille's quest. Instead, she now wants to know the truth about her father. Mado admits was the one who destroyed the photographs of her father. When she was 10 years old, the children at school had taunted her, calling her names and ashamed of her father the traitor, Mado had come home and destroyed every trace of him she could find.

Rachid shows Camille his footage from Les Cévennes, and tells her the people he spoke with were reserved. The older generation did not wish to talk about the war, and the younger generation didn't know much about it. Camille, however, remains undaunted. Rachid invites her to his home for a traditional dinner of couscous and vegetables with his family. After dinner, Camille shows him the address, and he tells her he spoke with a man named Leblanc in Saint-Jean.

The next morning, Camille tells her producer Martine that she will be leaving for Les Cévennes directly after the taping. Martine is angry that Camille would jeopardise the entire program with her abrupt departure, but Camille remains adamant. Bruno accompanies her to the train station, and wishes her luck. However, when she receives a call from him the next morning on her way to Saint-Jean, it is with bad news. The president of the television station is talking about firing her over her unscheduled vacation. However, she refuses to give up her quest for the truth. Bruno tries to remain upbeat, wishing her luck. But he is clearly worried. In Saint-Jean, Camille finds a WWII memorial with Pierre Leblanc's name carved on it. She is introduced to Jeanne Leblanc's grandson, who warns her that his grandmother does not like to discuss the war. She shows him the letter from Antoine, and Jeanne agrees to meet with her.

Jeanne's husband Pierre was in the Resistance. Antoine had joined the Resistance, helping blow up train tracks, and sabotage the German Army's progress wherever they could. But Antoine was impatient. He wanted to hit them harder, and when his friend Roland Fergus discovered the Germans were stockpiling weapons, they had Pierre recruit as many Maquis in the area as possible to seize the weapons. However, when they arrived at the train yard, they were ambushed by the Germans. Pierre was wounded, and crawled home, but not before he had seen Antoine meeting with Fergus—who had been wearing a Nazi uniform. Pierre died in his wife's arms, and Jeanne never forgave Antoine for his betrayal. Camille tries to find out if there were any facts which might cast doubt on the accusation, but Jeanne becomes upset and throws Camille out. However, her grandson catches up with Camille and tells her his grandmother is sorry for losing her temper, and has something for her. It Is the photograph of Antoine and Fergus, and the information that Fergus lived in Marseille. Before the war, he owned a garage in the Old Port area of Marseille.

At Canal 7, Bruno tells Martine that Camille is in Marseille. Martine shows Bruno the ratings, which have dropped 3 points since Camille left the show. She is the star, and without her, all of them are finished. Martine meets with the president, who is furious over Camille's absence. They hired Camille when she was a local radio host, they made her famous. Martine tells him that if he fires Camille, she and her entire staff will walk. They compromise: Camille has one week to return to the program.

In Marseille, Camille goes to the Old Port looking for Fergus, but the garage is empty except for a raï band practicing. However, one of the young men in the band sends her to an exhibit in a museum about the French Resistance during the war. The curator of the exhibit goes through the unidentified photographs in the collection and finds a photo of Fergus. According to the address on the back, Fergus is now in Casablanca in Morocco. Camille travels to the address on the back of the photograph, and the proprietor of the shop located at the address tells her M. Fergus was ill and unavailable. She asks if he could ring Fergus, and tell him the granddaughter of Antoine Leclair wishes to see him. She can meet him at his home that evening, provided she covers her hair and dresses modestly. M. Fergus has converted to Islam, and changed his name to Al-

Fergus meets with Camille with his son. He explains that the night Pierre Leblanc saw him in a Nazi uniform, it was not because he was working with the Nazis. It was merely a deception, to fool the enemy. When he and Antoine arrived, they realised it was a trap. Antoine wanted to try and save their friends, but Fergus wanted to retreat. Antoine told him to go—there was no reason for them both to die. Antoine sacrificed his life for Fergus', and Fergus tried to explain to the Resistance in Saint-Jean that Antoine was not a traitor but a hero. But the townspeople refused to believe it. Fergus left France bitter and angry. However, he gives Camille a packet of letters and documents from that time, in the hope that she can prove Antoine's innocence and reclaim his honour.

A triumphant Camille returns home to find her mother asleep in her apartment, having waited up all night for her. She apologises to Mado for how she had acted in the past, and promises things will be different from now on. Mother and daughter have come to a new understanding now that the truth about Antoine ahs been discovered.

Camille fills Bruno in on her adventure, and he thinks the trip did her a lot of good. It is as if a weight has been lifted from her shoulders. He is sorry that her grandfather was presumed guilty, but "c'est la vie." Camille gets angry with him over his dismissive tone when her grandfather was murdered, his honour dragged through the mud, and he apologises sincerely and tells her he hides behind the façade of a buffoon. He makes light of her constant rejection, but it is obvious that he is glad she is back—and not just because it saved his job.

At the studio, life is back to normal—right down to Bruno fretting because Camille is late and the taping will start in three minutes. In the control room, Rachid asks Martine where Camille is, but she doesn't know. Outside the studio, Girard tells Camille that a committee of former Resistance fighters and historians have agreed to review her grandfather's case. Camille tells him she will not rest until the truth acknowledged and Antoine and Fergus are awarded the medal of the Resistance. Camille is surprised when Girard gives her a small bouquet of flowers, and invites him to dinner the following week.

Camille and Mado walk through the park, and Mado gives Camille her grandmother's locket back. Camille opens it to find a photo of Antoine next to the portrait of Louise.