Family Is Family is a French comedy movie released in 2018, directed by Dany Boon and starring himself and Line Renaud. The plot revolves around Valentin D, a successful architect and designer, who pretends to be an orphan because he is ashamed of his working-class roots. He lives a wealthy and luxurious life with his wife and children in Paris and maintains a close relationship with his adoptive mother, Monique.
However, his life turns upside down when his long-lost sister, Sophie, shows up at his door after their father dies. Sophie is a single mother struggling to make ends meet and desperate for financial help from her brother. Valentin is initially resistant, but he eventually agrees to help her out on the condition that she does not reveal their true identity to anyone.
As Sophie and her son move in with Valentin's family, they begin to uncover hidden secrets and the true meaning of family. It also becomes apparent that Valentin's luxurious lifestyle has caused turmoil in his marriage and relationships with his children. With the help of Sophie and his family, Valentin learns to embrace his past and realize the importance of not only his family but his roots as well.
The movie is a heartwarming and comedic tale about the importance of family, acceptance, and love.