Billionaire CEO Claire Sullivan is about to marry her boyfriend, Aiden Carter. She picks up her future mother-in-law, Sue Wallace. Sue Wallace mistakes Aiden's mistress, Tilly, for the daughter-in-law, and Claire Sullivan for 'the other woman,' humiliating her. With Gwendolyn Grant, wife of the richest man, Claire fights back, learns of Aiden's affair, and plots revenge. With Gwendolyn's matchmaking, she joins forces with her son, Ethan Grant.