After his jazz prodigy brother's death, Tae-yi loses interest in life. Se-heon, a passionate new student, rekindles memories of his brother through his music. Se-heon suspects a connection. But his return stirs tensions....
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....
After the sudden death of his older brother, who loved jazz, Han Tae-yi loses his passion for music and wanders for a long time. Yoon Se-hun, a transfer student, appears and gets on Tae-yi's nerves by playing jazz songs his brother liked in the school practice room. Although Se-hun is a classical music major, he secretly admires jazz. Se-hun and Tae-yi often argue over using the practice room, where they learn more about each other, and the relationship gets more complicated......