Nam Hyora is back, and Byun Baekhyun knows a little bit more than he should. In their last year of high school, they chase their impossible dreams and find solace in each other. But they come across a fork in the road when she finds out about his accidental discovery of a certain letter. Will they take their own paths, or continue to walk together? Sequel to "Little Do You Know".

Byun Baekhyun has a huge crush on Kim Taeyeon, a senior in the same school he's attending. He doesn't know how to approach her, so he asks help from Nam Hyora. She agrees to help him, only to regret her decision a bit too late.