An odd woman named Sayoko (Mikako Ichikawa) rents cats to lonely people. Some of the renters include an old woman who lost her husband and her cat, a middle-aged man who moved away from his family for work, a woman at a reception desk who questions her existence and a man who has a connection with Sayoko.

Sayoko rents out cats to help lonely people fill the emptiness in their hearts. She walks along the banks of the river with a megaphone promoting her service and her animals in a handcart. It turns out that Sayoko is lonely too, ever since the death of her grandmother. All she has left is her cats. However, one day a young man shows up from Sayoko's past. He follows her home and suddenly Sayoko's life seems to completely fall apart.