After a drinking party with coworkers, a junior employee receives an unexpected invitation for a second round from his admired female senior. Though she usually appears reserved and never talks about risqué topics, alcohol completely transforms her personality. As he takes care of her at his place, she suddenly becomes lustful, starts touching his body, and impulsively engages in creampie sex with him. The night ends with the two of them indulging in passionate intimacy late into the night.