One night, Han Boreum, plagued by an inexplicable illness, seeks out a shaman. The chilling prophecy he receives is this: To avoid a fatal curse, he must sleep with a man overflowing with positive energy. Desperate to find this mysterious man, he encounters Joo Taeyang, a seemingly perfect guy known as the ‘Apollo of Business Administration.’ However, Taeyang harbors a hidden dual personality. As their fateful encounter unfolds, Boreum faces a seductive mission that can only be accomplished during the full moon—a mission involving tears, temptation, and danger.