“What was my role in this novel? "I want to know what kind of relationship I had with Chae Seung-yeon." Seung-yeon is possessed by the father of Obsessed Gwang-gong in the impoverished BL novel written by her younger sister. Woo-jin, the father of Main-su, saves Seung-yeon who was on the verge of death. They realize that they are in-laws, but as time passes, their relationship somehow becomes different from the original story...