Broke college grad Ella strikes a transactional marriage deal with cold billionaire Atlas Blackwood. He offers her a huge monthly allowance and a luxury mansion, on one strict rule: she must act as his devoted spouse in public, while staying completely distant in private, merely a "placeholder" for his long-time unrequited crush, Celeste Winslow.
Ella accepts the offer purely to pay off massive debts, fully determined never to fall for Atlas. Their hollow cohabitation shifts drastically when Ella meets Celeste at a wine gala. Celeste instantly grows fond of Ella, defying Atlas’s years-long one-sided affection for her. She even moves into the mansion to stay close to Ella, leaving Atlas heartbroken and furious.
Desperate to win Celeste back, Atlas signs a new, higher-paying contract with Ella to spy on Celeste. But complicated feelings bloom between the two women. After Atlas and Ella finalize their divorce, Celeste gives Ella a large sum of money to ease her financial stress.
Chaos follows as Ella’s mother arranges numerous dates for her with wealthy men and women. Yet Ella only has eyes for Celeste. After misunderstandings, jealousy and outside gossip tear them apart briefly, the pair reconcile. Ella proposes to Celeste, ready to build a genuine life together, while Atlas and jealous socialite Vanessa plot to disrupt their new romance.
