Chinese secret agent Da-hee receives intel that a large number of illegal firearms are being smuggled into Korea and is sent to investigate the case. She meets Su-han, who is supposed to help her with the case, but due to his lackluster skills they fight over trivial things. But as their witnesses are suddenly murdered, the two of them quickly become the prime suspects.

Old man, Moon-ho, spends his time masturbating because of Alzheimer. Yoon-jeong works as caretaker for Moon-ho. One day, Yoon-jeong finds Moon-ho completely recovered from dementia…

Dreaming of a box-office hit, an adult-movie director teams up with his crew of three misfits to lure a top actress into starring in his new film.