A Hong Kong massage parlor experiencing rapid nationwide growth. One particular shop reportedly allows handjob and double blowjob services, with rumors suggesting full intercourse is also possible. A male performer interested in the sex industry goes undercover to investigate the premises. Inside, he finds another customer already present, seemingly involved in a dispute. The playroom features only bare concrete walls and a bed, creating an eerie atmosphere. Two female staff members arrive for a double service course; after the massage ends and things turn sexual, the service fees suddenly become exorbitant. When the man tries to leave, his shoes are hidden, trapping him inside. However, masturbation release is confirmed to exist. By opting for extended services or the "King Course," customers reportedly succeed in achieving full intercourse threesomes.