To dunk on her sleazy ex, Sophie Bennett spins a wild lie that mega-rich heartthrob Lucas Harper is her man—only for Lucas to overhear and drag her into a whirlwind marriage to cheer up his sick grandma. The plan? Split once Grandma's back on her feet. But as they play house, sparks fly, and love sneaks in. Plot twist: Lucas realizes Sophie's the genius doctor he's been hunting for, and their fake marriage turns into the real deal with all the feels.