S01:É01 - S01:E01 - Episode 1
First day of school, K-pop boy band leader Seol-chan asks New Zealand girl Se-yi to be his partner.
S01:É02 - S01:E02 - Episode 2
Seol-chan is gone on the day of the evaluation. Se-yi and Seon-woo is left to start without him.
S01:É03 - S01:E03 - Episode 3
Seol-chan, jealous, fights with Se-yi. The class gets tangled up in an unimaginable accident.
S01:É04 - S01:E04 - Episode 4
Seon-woo declares he won't hide his feelings toward Se-yi. Seol-chan and his conflict continues.
S01:É05 - S01:E05 - Episode 5
All For One will be participating in the charity show again. Seol-chan suggests a battle.
S01:É06 - S01:E06 - Episode 6
Seol-chan learns about Se-yi's past and is mad at her for her misjudgement about him and Seon-woo.
S01:É07 - S01:E07 - Episode 7
Seol-chan learns that there is a strong power vocal in All For One. Se-yi leaves practice crying.
S01:É08 - S01:E08 - Episode 8
Color Bar completes their battle. Seol-chan and Se-yi's date is ruined by an unwanted guest.
S01:É09 - S01:E09 - Episode 9
The trio becomes more awkward with Seon-woo's confession. Seol-chan leaves on a tour to Japan.
S01:É10 - S01:E10 - Episode 10
Seol-chan gets hurt while trying to protect Se-yi. Eun-ha sees them together in the nurse's office.
S01:É11 - S01:E11 - Episode 11
Seol-chan gets chased down by a PD. Meanwhile, Color Bar receives un expected offer.
S01:É12 - S01:E12 - Episode 12
Se-yi confesses her love to Seol-chan. Color Bar practices for their final battle with All For One.