Bomgyu was an ordinary janitor at school, he did all the dirty work, took out the trash, swept up the dirt, wiped the dust and washed everything in the school. He also cleaned the school grounds and washed the toilets. Beomgyu had long been in love with his biology teacher, Kang Taehyun. Beomgyu often noticed how Taehyun sweetly communicated with other teachers and helped students. Beomgyu understood that they were both from two different worlds. Beomgyu barely got this job as a janitor and Taehyun is one of the best teachers.

One day, Beomgyu was taking out the trash as usual. Suddenly, he felt a touch on his shoulder, Beomgyu turned his head and froze. In front of him stood Kang Taehyun himself.

"Sorry to bother you, but you dropped your wallet in the hallway."

Taehyun explained and handed the wallet to Beomgyu.

"You should be more careful, in case someone picked it up and moved on."