She is a retired three-time Golden Award-winning actress who, to avoid rumors and pressure from her family to marry, disguises herself as an ordinary office worker and “goes undercover” in the city. He is a notorious workaholic in finance, but after an accident forces him to marry into a wealthy family, he becomes the live-in son-in-law everyone calls a kept man. When these two people hiding their identities meet under one roof, she discovers that the man who fumbles around the kitchen in an apron every day has a poster from one of her movies, released ten years ago, saved on his phone. He has no idea that she has already sketched him into her “Live-in Son-in-Law Survival Guide,” with a drawing of him frowning as he revises a proposal. “Miss ‘Ordinary Office Worker,’ how long have you been secretly drawing me?” He holds up her sketchbook, showing the doodle labeled “The live-in son-in-law is hottest when he frowns over a proposal.” She grabs his wedding ring in return. “Ever since you first turned the eggs into charcoal in the kitchen and stubbornly claimed it was a ‘new recipe.’”