Hae-rin is a university student who has just landed in a complicated romantic quandary. She recently partnered with a junior named Woo-jin and noticed feelings well up. Then Eun-hwan, the man she had a crush on in her school days, suddenly returns after disappearing for two years and wants to pick up the relationship where they left off. Hae-rin feels her heartstrings being pulled in two directions at the same time. Will Cupid resolve this complicated love triangle, or are these young people on the road to heartbreak?