Jun, married to a man who runs a bicycle shop, sees her life unravel as the shop's customers dwindle alongside the disappearing bicycles, until her husband suddenly vanishes. Though he was unreliable, their sex life had been satisfying, and without him, Jun copes by masturbating to relieve her pent-up desires. Months later, her husband returns with an unknown woman. Shocked and disgusted when he demands a divorce, Jun accidentally overhears them having sex that night, pushing her sexual frustration to the limit.