A girl who fights but can't fight because her family, her family is a business one.  She can't fight, can't protect herself, etc..  She

Lee Chulgi and Lee Taehoon had great reputations as soldiers, but fate turned against them, and they have little chance to go to another war in the near future.  The family's youngest son always wanted to prove, but he did not have perfect fighting skills like his brother. But Taemin wants to change his fate, and he believes marriage with a rich girl is not the only way to bring honor to his family.