Daniel Jang is a violin player, an inspiring young musician who has still unknown of what his future will become. Two years ago, when he attended his seniors' graduation, he saw a performance from two talented young musicians that called themselves, Crescendo House. Ever since then, Daniel became a fan of them, especially to their seem-to-be leader, Yong Junhyung, and their diva, Ahn Seoyul. Until one