An unstable young woman pines for the ex-boyfriend who nearly beat her to death – and who has mysteriously disappeared.

Sawada graduated from an art university but cannot rely on it to make a living and is working as an assistant to a famous contemporary artist. He lost his independent will and became accustomed to simply doing what he was told. One day, Sawada had an accident on the way to work and lost his job because of an arm injury. When he returned to the room, there was an ant on the floor. After drawing a circle as if guided by an ant, Sawada's daily life begins to be eroded by the circle.

Yoshito Hiruma (31) (played by Amane Okayama), a part-time university lecturer, is forced to take care of his 10-year-old nephew, Kota, after being left in charge by his pregnant sister. However, before long, Kota disappears. When Yoshito finally manages to find him, he discovers that Kota has become disillusioned with reality and cryptically expresses his desire to “go somewhere else, anywhere but here.” Yoshito resonates with his words, and as their bond deepens, they delve further into Yoshito’s field of expertise—pessimism. Together, they embark on an unusual cohabitation, finding a peculiar sense of enjoyment in their shared pessimism. But eventually, the worst tragedy imaginable befalls each of them.