In the middle of a heavy downpour, a monk finds a kitten, which he names Anzu and raises with extreme care. However, 30 years later, the kitten is not only still alive, but has become a ‘ghost cat’ that talks and lives like a human being. At 37, he rides a moped and works part-time as a masseur. One day, the old monk asks Anzu to look after Karin, his 11-year-old granddaughter who has been abandoned by her father, and Anzu reluctantly agrees. At first, their strong personalities clash and sparks fly, but gradually they begin to understand each other. Then Karin asks Anzu for a favour: she wants to see her dead mother again. This is the starting point for a dramatic journey that will take them to Hell itself.