So-hee enjoys her seemingly perfect life as a newlywed with her seemingly perfect husband. She begins to suspect her husband for being too perfect and hires a private detective to trail him around. The detective comes back and tells that her husband Man-gil is all over the town all night, flirts with every girl he meets, and drinks gasoline. He apparently has already married several times and all the women he married previously are either missing or dead. With the help of her school friends Sera, Yang-sun and Detective Jang, So-hee decides to kill her husband first, but he won’t fall for any of her traps so easily… Tonight, her duel with unbreakable Man-gil begins!