In order to help her father, Chiwa Takanashi agrees to an arranged marriage with the company president, Hokuto Mamiya--a man she doesn't know--at the request of Hokuto's grandfather. Chiwa believes the arrangement isn't binding, but her new partner seems to think otherwise. Can two strangers living together find their way to a happy marriage?!

Chiwa Takanashi has married a total stranger--company president Hokuto Mamiya--to get her father out of debt. Hokuto has pledged fidelity to her, but then the tabloids break the news of him dating a famous actress. Though Hokuto has denied having an affair, Chiwa starts confiding her worries to Yu Yagami, a handsome new company recruit. Is the contract they signed the only thing holding their marriage together?