In the office, Taejoon reigns supreme as the "Cupid of Sales," renowned for successfully pairing colleagues thanks to his ability to see the color of people's auras. Unfortunately, he himself has been single his entire life. But everything changes when he drunkenly kisses the new recruit, Hongyeon, which leads to a sizzling night at a motel. And then Taejoon discovers something fascinating - Hongyeon's aura is a mesmerizing rainbow! As Hongyeon boldly pursues him, Taejoon's shyness clashes with their steamy connection. Now they must navigate a somewhat clumsy and spicy office romance, where colors will fly in more ways than one!