Ten minutes—that's how long it takes for wealthy heir Cha Yiheon to turn down every woman he dates. Ji Eunchae is desperate to escape her abusive family, so she vows to win him over. Never mind the fact that he was once her high school teacher! Though reluctant at first, Yiheon offers her a deal that will save them both from their familial pressures: the two will marry and, within a year, Eunchae must destroy their sham relationship. A transactional marriage has no room for love...right?