Mami, introduced by an acquaintance, started working part-time at a traditional Japanese restaurant. Thinking it was an ordinary job, she began her duties, but one day she was suddenly locked inside a room. She soon realized the establishment was actually a secret brothel that lured in and exploited amateurs. Despite enduring sexual harassment from drunken customers, Mami was skillfully overwhelmed in the confined space, eventually giving in and welcoming the man beneath her kimono.