Lee bi, a college girl who lost her parents and stayed in her stepmom's first love, Jeong Hyuk. I love Jeong-hyuk at first sight for being his guardian, but he only treats Lee bi as a child. Confused by the subtle feelings with Jeong-hyuk's half-brother Yoo-ha, who approached her like a friend, she also paused for a moment. With the advent of my stepmom's old lover, Gyu-yeung, the four of us are in a dangerous and erotic relationship...