Nova, the neglected third son of the powerful Fols family, is considered useless because he cannot wield his family’s unique swordsmanship power. Given a small territory with little responsibility or expectation, he lives a quiet, unremarkable life.

Everything changes when he receives a marriage proposal from Shia, the beautiful and seemingly perfect head of the rival Ark Gate family. Despite the feud between their families, Shia reveals that she has loved Nova since they first met.

As they begin their married life, Nova discovers that the supposedly cold and terrifying Shia is actually kind, affectionate, and adorable with him. Determined to give Nova everything he never had, Shia sets out to change his fate and build a new future together.