超リッチな人と電撃結婚したら

With the help of his grandfather, Dave Quinn marries Tessa Gray, a girl he does not know much about. After marriage, Tessa works in Quinn Corp as a cleaner and makes Dave promise to keep their relationship a secret from their colleagues. However, some of her colleagues show disdain towards her, especially Dave’s childhood sweetheart, Lana Harris, who has a crush on him. Out of jealousy, Lana sets Tessa up in an attempt to get rid of her, hoping to ruin her marriage with Dave.