An idol band S.O.U.L. debuts and launches their new song. However, the public disapproves of the band as its song gets subject to a plagiarism dispute.

S.O.U.L. faces strong criticism from the public, but Kang tells Soul to take the monthly evaluation test regardless. Soo-yong from Mongol joins Starlight and helps Soul making a song.

Kang asks S.O.U.L. to collaborate with Soo-yong. S.O.U.L stays in the same studio with Soo-yong to accelerate their progress, but Soo-yong does not make the best first impression on them.

Eun-sung finds out that it was a mysterious masked woman who revealed that S.O.U.L.'s song is a rip-off. Soo-yong shares a song he wrote with S.O.U.L., but the members disapprove of it.

S.O.U.L. receives low grades on the monthly evaluation and gets ejected from the dormitory. Eun-sung becomes a manager of another idol band.

Soo-yong becomes the new member of S.O.U.L., and Eun-sung gets transferred back to S.O.U.L. Eun-sung heads to a broadcasting station to fix the program schedule.