The Billionaire Janitor — Episode 10

A retired billionaire magnate, once CEO of the world's biggest defense contractor, now works as a humble school janitor. When his own son throws him out of the house, he saves a young woman from danger and ends up in a contract marriage with her mother, the icy cold headmistress. As the school dean plots to overthrow her, he secretly uses his billions to save her and the school—until his true identity as the richest man in the world is finally revealed.