Hyunjin is a billionaire and lives in a huge mansion. Hyunjin fired the old maid and his secretary, on Hyunjin's orders, found him a new maid.

Hyunjin comes home and hears that someone is cooking something in the kitchen, he thinks that this is his girlfriend, but as it turned out his new maid who looks like 15 years old

Hello too young girl to be a maid Hyunjin said and laughed