Yuka, a stunning beauty who only appears at the bar on Saturday nights.
She uses her charm to swindle countless men out of their money, but her true identity is Shigenori Aiba (male), an office worker.
One Saturday night, Shigenori arrives at the bar dressed as usual in women's clothing and is approached by his coworker, Reika Hazama.
Flustered, Shigenori realizes she hasn't noticed his disguise. Reika identifies herself as a lesbian and invites him for a night of passion.
Despite knowing the risks, curiosity drives Shigenori to follow her, and then...