Butterfly Trap summary: My jealousy for you has now turned into love. Will you forgive me for ruining your life? Yang Dojin has always worked hard since he was a kid to try to excel in everything. But when he met Lee Taewoong in high school, he started having high inferiority complex. No matter in what, Dojin always got placed as second best to Taewoong. They even became friends though Dojin was always open about being competitive with Taewoong. Getting jealous day by day, he then decided to ruin Taewoong’s college entrance exam preparation by giving him a fake confession of love! 10 years later, Yang Dojin joins the same high school as the literature teacher. But what a twist of fate! There he reunites with Lee Taewoong who joined as the school nurse. From then on, Dojin’s work life as a teacher becomes hell.