Despite his stern demeanor, Choi Kang is actually kind and empathetic, and he desires to form meaningful connections with others at school. Regrettably, Haessal misunderstands Kang and sees him as a bully, so Kang turns to his online friend "Bada-nim" for help in correcting this misjudgment. Can Kang succeed in his mission and how will his association with Haessal evolve?