Introverted university student Kang Dae spends most of his time alone, and he prefers it this way. So he's initially unhappy when bubbly new student Bo Seon moves into his apartment complex and sets out to befriend him. But before Kang Dae realizes it, his life has changed irrevocably. As the two become closer, they slowly realize they have romantic feelings for each other; but neither has been in a real relationship before and both have trauma in their pasts. Will they be able to embrace the possibilities of what could be, or will they find that a new romance is a bridge too far?