Elodie and Yvan settle for the first time in a house with a garden, in a new neighborhood. This is an important step, supposed to give new life to their couple and a better balance to their teenagers: Achille, a gifted boy and Chloé, a more fragile girl. Fortunately there is Bruno, the nice and considerate neighbor with each member of the family. But little by little Bruno reveals his dark side. Does his growing intimacy with Elodie and Chloé hide a desire to control this family, even destroy it? The day when Elodie begins a passionate relationship with Bruno, she does not know that she has gotten her finger in a hellish gear, from which no one will come out unscathed.