In the humid air of the rainy season, Ai struggles to pay the rent after her husband loses his job. When she tries to find work to help support the household, her proud husband refuses to let her work outside the home, deepening her anxiety. The apartment's owner, Sugaura, pretends to be kind in front of her husband, but when alone with Ai, he reveals his sinister nature, smirking and spewing cruel words. Gradually, he begins to threaten her and invades her body with slimy, lingering licks. As the pressure mounts, Ai starts taking small steps to find a way to protect herself.