Stéphanie is a jovial and strong single mother. She shares everything with her 13-year-old daughter Léna: their passion for Angèle, their clothes, even the teenager's diary, in which Stéphanie corrects omissions... As they go to an Angèle concert with Kali, Lena's best friend, Stéphanie will realize that her baby has grown up.

Alex, 43, is not a man of many responsibilities. He works as a tow truck driver in the car repair garage run with an iron fist by his mother Antoinette. She hopes he will someday take over the business, but Alex manages to consistently prove that he’s not up to the task. One day, he assists a woman whose car broke down and ends up spending the night at her place. The next morning, she is nowhere to be found, and Alex discovers he is alone... with three kids!