When Emily, a young and unassuming secretary, is drawn into the twisted schemes of her billionaire boss Dominic, her quiet life is turned upside down. Dominic arrives at Emily's doorstep with a gunshot wound, claiming his wife Vivian tried to kill him. Desperate, he begs Emily to go undercover as a maid in his lavish penthouse to spy on Vivian, whom he suspects is cheating and plotting against him.