Soo-hyeok and Yeon-ji are faithful couples. Although Soo-hyeok is faithful during the day, he wants to be rough at night, however, Yeon-ji is still faithful at night. Su-hyuk uses his junior In-seop to turn Yeon-ji into a hot woman. In-seop manipulates Yu-ri to defile Yeon-ji, but falls in love wit...