Sim Min-hee

On a hot summer day, Woo-joo (20 years old, female), who was recovering in the countryside, comes to Seoul for an entrance exam interview. After her interview, she contacts her sister who is studying in Seoul, but her sister does not contact her. But her sister died. The universe cannot accept her sister's death. The universe left in Seoul to organize her sister's luggage is behind the scenes, and she goes to meet her older sister's acquaintances during her lifetime.

It begins in a deserted public bath house, on a sultry summer afternoon. The building is blacked out and its landlady goes into men's bath to handle the situation. There, she accidentally witnesses something which afterwards causes irreversible changes in her life.