Beomgyu is a chaotic and energetic guy who is in high school. He likes video games, guitars, and playing pranks on everyone and causing trouble for his older brother Soobin, who studies at the university.

One day at school he was noisy during class and the teacher told him to bring his parents to school. Beomgyu got scared and decided to ask his older brother Soobin to come to school tomorrow, but when Beomgyu entered his brother’s room, he saw an unfamiliar handsome man sitting on the bed.