Humiliated on his wedding day, the male lead marries the female lead for 500,000 to fund his mother's treatment, agreeing to a one-year contract. She, a CEO, hides her identity. Believing he lives off her, she makes things difficult. He works hard to pay off the debt. Living together, she discovers his kindness and talent, falling in love. Her CEO identity is exposed. Due to unequal statuses, he, having paid his debt, demands a divorce, freezing their relationship.
