Stella is 6 but she is going to school for the first time. Happy, exuberant (maybe too much) she is a lovely child, but is often absent. Her parents say she is fragile. She tells her teacher, Céline, she fell when asked why she has a few bruises. Is it child abuse or real immune deficiency? The doubt is growing in the mind of those who meet the child. Worried, Céline notes every injury until the day the family moves without telling anyone.

2009. Michel Djerzinski, a genius researcher specialized in molecular biology, mysteriously disappears in Ireland. His latest discoveries would have opened the way to a major upheaval in the history of human genetics. This is the occasion for a dizzying plunge in time where we discover his half-brother Bruno, a tortured joker who will meet love in a post-sixties campsite, Janine, Bruno's and Michel's mother, a former hippie who has always refused to raise her children in a conventional way, and Annabelle, with whom Michel will fall in love as a child.

Lawyer, loving father and husband, Vincent is a fulfilled man, living the life he always dreamed of. And yet after a bad encounter, he unwittingly takes a date rape drug and wakes up with contusions on his face and blood between his legs.

A penniless young man, Kevin is forced to return to live with his parents in the heart of the Picardy countryside. There, he finds a job in a pig farm. Not knowing how to look ahead, Kevin has no real project to defend. Everything shifts the day he meets Alice. This attractive voltigeuse who is not cold to the eyes exercises her talents in a circus of the region. Under the spell, Kevin tries to get closer to her and her way of life very free. To conquer it, he decides to train himself to acrobatic riding. Despite the misunderstanding of his family, he does not intend to give up this crazy bet that finally gives him a reason to live his life as he sees fit ...