Mami's mother rents out rooms to three guys, hoping to change her daughter's aversion to men after discovering her crush on a girl. When entangled in someone else's affair, Mami asks her new roommate C.U. to pretend to be her boyfriend.

Happily living alone in her family's pension, Mami vows to die before dating a man, after her mother catches on to her secret girl crush. So her mother rents out the house to three guys in hopes to bring her daughter around. But when Mami gets pulled into someone else's romance problems, she begs her new roommate C.U., to be her fake boyfriend.