Kang Jae-i lives a strictly calculated life revolving around rigorous study schedules and meticulous routines. However, his orderly world is turned upside down when a free-spirited transfer student, Ha I-sol, takes the seat next to him. After a terrible first impression leads to a high-stakes academic bet between them, these polar opposites begin to understand one another and gradually transform each other's lives. A youth romance between an honor student who only believed in correct answers and a rebellious transfer student.