The World's Richest Man is Cleaning Again! — Episode 13

Billionaire tycoon Jack retired to spend more time with his family. Once the CEO of the world's largest defense contractor, he now works as a simple school janitor. When his own son kicks him out to make room for a new baby, a new chapter begins for Jack. He rescues a young woman from a dangerous situation, and she is so impressed that she sets him up with her mother, Emma, the ice-cold school principal. Jack and Emma enter into a fake marriage. However, the school's scheming dean wants to overthrow Emma, and Jack repeatedly steps in to save her, even from the school's financial ruin. Just as Emma faces her greatest challenge and is about to be ousted by the school board, Jack steps in with billions, saving her from public humiliation. In the process, his true identity is finally revealed: the richest man in the world!