Soul is friendly and eager to make friends. When the new student Keeho arrives, he is drawn to Keeho's cool attitude and sharp comments. Keeho pushes people away, not wanting to connect with anyone. But as Soul keeps trying to reach out, he starts to see the struggles beneath Keeho's tough exterior. In this enemies-to-lovers story, can Soul break through Keeho's walls and discover the truth behind his icy facade, or will their differences keep them apart? INSPIRED BY THE K-POP SONG: Whispers in the Dark by monsta x

In a world where guardian angels are tasked with protecting and guiding humans, Keeho is an enthusiastic, charming guardian whose mission is to inspire his assigned human, Soul. Soul is a shy, introverted teenager who feels invisible and struggles with self-doubt. As Keeho helps Soul navigate his challenges, their bond deepens, leading Keeho to break the fundamental rule of the celestial realm: angels cannot fall in love with their assigned person.

When Soul moves from Japan to Korea, he hopes to stay under the radar at Harmony High. But when Keeho, the school's star vocalist, discovers his hidden dancing talent, their worlds collide. Going through high school they must face rivals, friendship, and maybe something more. Can their hearts find harmony in the process?