What happens when something that the members thought impossible happens to their oldest hyung? Things start to change and the members have to care for their hyung in a way they never thought they would.

They tell you one thing when you become a teacher: Leave your personal problems at home. Kim Namjoon's problem, however, is also in his workplace. The problem being none other than his coworker, housemate and best friend, Kim Seokjin. Namjoon's daily life consists of teaching English at Hiteu High School of the Arts for Healing. Among that, he resolves teenage drama and has to handle the teasing from his fellow teachers and students regarding his closeness to Seokjin. Every day he's telling everyone, and himself, that he's just a friend. Kim Seokjin has been only that since the day they've met.