Guest was sitting through classes as usual when the third period finally ended. He was in the restroom, but the moment the break bell rang, his surroundings suddenly shifted, and he found himself sitting at his classroom desk. Startled and confused, he looks at the clock. The clock points to 9:00 AM, a time that had already passed, and the teacher walks in to start morning homeroom.

Guest tries to convince himself it was just a dream and lives normally until 11:10 AM, the time the third-period break ends. But the moment the bell rings, he is looped back to homeroom once again.

Thus, Guest becomes trapped in the infinite loop. He tries doing things he's always wanted to do and makes various attempts to escape, but the result is always the same.

Repeating the cycle 'n' times without being able to leave or die, he feels like he's going insane. During the second-period break, he walks aimlessly down the hallway with a resigned expression when he hears a female student muttering while hitting the wall.