Park Sunghoon and Kim Camille were inseparable as kids-neighbors, classmates, and best friends who insisted there was nothing more between them. But everything changes when Sunghoon gets his first girlfriend. Camille, blindsided by jealousy she never knew she felt, begins to pull away, and the once unbreakable bond crumbles. By the time they meet again in college, they're practically strangers, weighed down by unspoken regrets and unresolved feelings.
Now colder and more confident, Sunghoon masks his confusion with teasing and indifference, while Camille keeps her guard up behind icy politeness. But fate keeps throwing them together, and as walls come down and truths come out, their messy past paves the way for something unexpected-something that just might be love.