This is a love story between Kang Han Gyeol, a depressed genius music composer living under a hidden identity, and Yoon So Rim, a bright high school student with a beautiful voice and fearless honesty.

So Rim’s sincerity and singing gradually pull Han Gyeol out of his emotional darkness. As their bond deepens, So Rim discovers the truth—Han Gyeol is actually the mysterious producer “K” behind the popular band Crude Play.

Together, they face the challenges of love, identity, and the pressures of the music industry.