Lee Hyun is a university freshman. He is cheerful, and optimistic, and has never really experienced any form of emotional hurt or heartbreak. His university days start with a bang when he sees and immediately falls for Kim An, a young tutor in the same department where Lee Hyun is studying. Lee Hyun starts following Kim An around like a puppy, pestering the cold and aloof young tutor with questions.

Meanwhile, Joo Hyuk is a student who is returning to campus after a break. He meets and has a fling with a man named Sung Min after they meet by chance, but the latter vanishes without a trace the morning after. Joo Hyuk is shocked to later discover that Sung Min is actually his new class’s teaching assistant. And fellow student Min Woo is also stuck in a confusing romantic situation: He has a secret crush on his unemployed best friend Ma Roo. Will Cupid help sort out the love chaos as these six young men strive for academic – and romantic – success?