Joo Hye-won

Ju-yeon subs in on an R-rated dating reality show. Intimate contact is mandatory and bedmate swaps every night! Ex-boyfirend Inho, nice Jae-hee, and sexy Se-heon is waiting for her in the sharehouse. And their exes start moving in... Participants approach her through a moral-bending rule. Romance vs Money, Instinct vs Reason. Ju-yeon's shaky decision-making begins.

Every summer, Se-woon, a freshman in the business administration department who always wanted to run away, ends up getting deeply entangled with Chae-min, a senior he dislikes and the captain of the basketball club, during a summer session class.