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.

Hee-won, an ER nurse, transfuses her own blood to save Tae-young, a mob boss who arrives with a gunshot wound — only to discover his deadly secret: hemophilia. On the day of her wedding, her fiancé's betrayal leaves her with nothing. Tae-young hands her a contract: be his fake wife for one year. With 3 billion won and her father's medical bills on the line, Hee-won is locked away in his mansion. She pushes back against his cold obsession and control, but slowly uncovers the loneliness and warmth hidden beneath his ruthless exterior — and the more she tries to escape, the deeper she falls.