Karin, an 11-year-old girl, is abandoned by her father in the house of her grandfather, who decides to assign his friend Anzu, a 37-year-old ghost cat who behaves like a human and works part-time, the arduous task of looking after his granddaughter. At first, the two inevitably clash, but as their coexistence progresses, Karin dares to ask him for an essential favour: to accompany her to see her deceased mother. Premiered at the Cannes Filmmakers' Fortnight, the film co-directed by Yoko Kuno and Nobuhiro Yamashita, well known for Linda Linda Linda (2005), takes us, through a warm and dynamic animation, into Karin and Anzu's dangerous journey, which will lead them to hell itself.