Actually, the young drug dealer Aimé just wants a customer to pay her outstanding bill. But then he is left alone with her daughter. Unexpectedly, a heartwarming, albeit temporary, bond develops between the two in the dreary apartment.

Mona lives with her adult son, Joël, who is "slow," as they say. He works in a specialized facility and is passionately in love with his coworker, Océane, who is also disabled. While Mona knows nothing of their relationship, she eventually learns that Océane is pregnant, and the symbiotic bond between mother and son falters.