Elisa, a poor college student drowning in family debt, accidentally spends one night with billionaire CEO Lucian. He offers her a secret contract marriage to resolve his family rivalry troubles, paying off all her debts. She hides their bond while interning at his firm, enduring constant bullying from Summer, Lucian’s self-proclaimed childhood sweetheart. After countless humiliations at work and a high school reunion, Lucian confesses he’s loved Elisa for a decade. His mother initially tests Elisa but warms to her. Finally, Summer’s schemes are exposed, and the couple drops the fake marriage pretense to embrace genuine love.
