In future Seoul, suffering from pollution and housing issues, Shin-dong must find a new rental due to his landlord's notice. His friend suggests renting part of his place to complicate eviction. Shin-dong advertises, and a peculiar newlywed couple wanting to live in the bathroom appears. He accepts them, but their strange behaviors soon become unbearable.
In future Seoul, suffering from pollution and housing issues, Shin-dong must find a new rental due to his landlord's notice. His friend suggests renting part of his place to complicate eviction. Shin-dong advertises, and a peculiar newlywed couple wanting to live in the bathroom appears. He accepts them, but their strange behaviors soon become unbearable.