Muriel is an elderly woman who lives in the solitude of her apartment. She spends most of her time focused on a crack that comes off her wall. One day, she receives a call from a former classmate, Nuria, who invites her to an "ashes ceremony", an unusual funeral. Until that moment of her life, Muriel has remained in a state of emotional anesthesia. But the image of the ashes floating in the air causes an internal tremor in her. Muriel decides to dig deeper, and agrees meeting with Nuria.