Ji-hye (Uhm Jung-hwa) was once a professional con man with a speciality of gorgeous deception, but now she is a little out of ideas and plans to quit and do small business. Before retiring, she decides to take on one last mission that may change her life: seduce the son of a wealthy antique family (Song Shixi) and steal the huge fortune hidden in the basement of their mansion. With the help of her daughter (Fang Min-ah), she must not only win the trust of the other family first, but also deal with the suspicious housekeeper and the young detective who is investigating her. Can Ji-hye and her daughter find the legendary huge fortune and start a new life?