The storyline follows Yoon Seon-ha (Kim Hyun-joo), who is professionally, an assistant instructor at a university, who is taken advantage of by her senior, and personally, an unhappy wife, struggling with the infidelity of her husband, Yang Jae-seok (Park Sung-hoon). Just when you think things can’t become worse for her, life takes an unexpected turn when she inherits a family burial ground from her uncle, who she didn’t even know existed. Two detectives, who are not always on the same page about this case, Choi Seong-joon (played by Park Hee-soon) and Park Sang-min (played by Park Byung-eun), inform her that her uncle might have been murdered. As if an unknown uncle wasn’t enough, she learns that she has a half-brother Kim Yeong-ho (played by Ryu Kyung-soo), with their dads being the same, who has popped out of nowhere to claim his share of the familial ground. As she unravels family secrets, the plot thickens into a serial killing spree, with Seon-ha becoming the final target, and the means to end all the killings.