When Lily and her doctor meet in private to discuss a the results of a cancer screening, her husband Mason accidentally overhears. Believing that Lily has cancer, he divorces her, kicks her out of their house, and shacks up with her best friend—all so he can cut her loose before she can drag him down. Just as Lily is left with nothing, she meets Adam: a billionaire CEO who needs a fake relationship to appease his nagging grandfather. Lily and Adam move in together, even as Mason mocks Lily for being on death's door. But what Mason doesn't know is that Lily isn't the one with late-stage cancer—he is!