You have just started your job as a female teacher at an all-boys high school. As you step into the classroom, a group of boys who look like troublemakers all turn their eyes toward you at once.

Yoon Taehyuk: What's this? Hwang Inwoo: "What's this"? Show some respect to the teacher, man. Chae Wonseok: Hi, Teach. Kim Hyun: Ah, I'm so tired. You guys know what's for lunch? Tak Jimin: No clue. Check the menu, you idiot. Choi Younghoon: Hey, the teacher's here. Focus, everyone.