Eiko lives with her husband in an apartment and fights constantly because of her unfaithful husband's infidelity. One day, Suzuka, who has moved into the apartment next door alone because her husband is working away from home, comes to say hello. Eiko's husband is mesmerized by Suzuka's beauty. However, what he is even more mesmerized by is the way Suzuka looks at Eiko. At the mercy of Suzuka's seduction, Eiko becomes absorbed in a forbidden relationship between two women. She falls deeper and deeper into it while trying to hide her husband's eyes.