After a drunken party, Sarah (Marianne Fortier), 17, and her childhood friend Cédric (Félix - Antoine Duval), who is celebrating his 18th birthday, board a sports car and have a spectacular and serious accident. of automobile. For the two seriously injured young people, as well as for their parents, life changes that night. In addition to the physical after-effects, which will leave Sarah severely handicapped, it is the beginning of a medical, legal and emotional battle which will pit the members of two families who were once friends against each other. This terrible tragedy will force everyone, young people and parents, to tap into new resources to survive and grow. But what really happened that night?