Deliveryman Jong-su is out on a job when he runs into Hae-mi, a girl who once lived in his neighborhood. She asks if he'd mind looking after her cat while she's away on a trip to Africa. On her return, she introduces to Jong-su an enigmatic young man named Ben, who she met during her trip. One day Ben tells Jong-su about his most unusual hobby.

Park Jae-sang was a royal geomancer, who helps people designate propitious site for houses, store and even graves under the belief that a grave in a good site will bring future fortune for descendants. But he loses his family because he exposed a conspiracy about crown Prince's grave site. Park Jae-sang plans to make a revenge of his family and learns that there is a much bigger conspiracy about propitious grave site; the place that would make grave owner's son the King of Joseon.

Jiyoung and Jin are the closest of friends. Following a visit to a bar together one night, the two of them decide to have another drink at Jiyoung's house. Out of ordinary, Jin is exceptionally drunk and suggests Jiyoung to a game of truth or dare in the midst of complicated emotional turmoil, thereby beginning a revealing series of truths and dares between the two.

Truth or Dare: Ji-yeong and Jin used to be close friends. Jin, who is unusually drunk, offers Ji-yeong to play Truth or Dare in the midst of a complicated emotional turmoil, and their close game of truth begins.