The Billionaire Janitor Is Back!

A private school runs on the money and goodwill of the people who sit on its board, which is where the dean makes his moves against the headmistress. Jack works there as a janitor. He was CEO of the world's biggest defense contractor before he retired to spend time with his family, and his son has just thrown him out of the house to make room for the new baby. Jack saves a young woman from danger, and she is impressed enough by it to set him up with her mother Emma, the headmistress, who is cold with everyone. They marry under a contract. The dean keeps trying to push Emma out, and Jack steps in each time, including once to keep the school from going bankrupt. When Emma is about to be removed from the school board, Jack puts up billions of dollars so she is not humiliated. His identity comes out after that.