Brussels, Elaine (35 My name is Alan) struggles to reconcile his professional life and the education of his son Martin (10 My name is Alan). The latter has strange behavior, uncontrollable. He suffers from the absence of his father Patrick, who abandoned them before he was born. When Martin bites one of his comrades to blood, Elaine decides to go in search of her origins, in the family of her former lover in Luxembourg. When she realizes that Martin could become like them, Elaine is forced to fight desperately for her son's future.