Sara is spending her summer at Denis and Annie's small lavender production. The couple lives with their nephew Victor who is immersed in a deep mutism. Lavender tells the encounter of these 2 teenagers completely poles apart but that a family secret will soon unite.
Otto, a 17-year-old punk, becomes involved in the social services investigation of his girlfriend Laura's death. He is caught up in a vicious circle created by his parents, his mute grandpa and Laura's mother.