Single mother Elise is completely devoted to her eleven-year-old son. He is her world. But that world is violently and cruelly destroyed in a single, terrifying moment when he is killed in a car accident just outside their home. Suddenly alone in her house, surrounded by suffocating memories, Elise faces a future that feels unspeakably bleak and colourless-and pointless. All Elise can think of is joining her son. But in her final, unspoken promise to him, she realizes she must stay alive until she finds someone to take care of his beloved cat, Persephone. As her unique relationship with this trusting creature grows, Elise is forced to confront her past and find the courage to move forward with her life.