Book 1: Attending a new school wasn't a problem for Lee Yoora, but meeting a tough boy group was a big mistake. V from the popular boy group, BTS, plans to ruin her school life when she accidentally spills her drink on him. But as time flows by, the BTS members find her somehow different and starts developing feelings for her, until Got7 appears. Competing against each other for Yoora became a big problem. Each of them tried to win her heart for a deal they made, but all of that changes when a dance/singing competition enters their life. Instead of the deal, they decided that the winner of the competition would receive Yoora's heart. Secrets of the members and lost memories are revealed to Yoora when she spends more time with the Got7 members, BTS members, and a new boy group. Book 2: A year later, the BTS members, Got7 members, and Astro members meets a new student name Hua Mei Li (who is Chinese and looks just like Yoora) at their school. Developing some feelings towards her, they soon are faced with some difficulties and hidden yet surprising secrets whenever they're with her.