Kai survives years of frontline warfare as a humble orphan soldier, rising through combat merit to command an invincible naval fleet that shatters an invading empire. Recognized by the high monarch as the royal kingdom’s lost second prince, Kai rushes back to his marital home, only to discover his snobbish in-laws have enslaved his wife Sara and daughter Diana in kitchen dungeons.
Shedding his modest armor, Kai immediately crowns his little daughter a royal countess and mobilizes his elite submerged dreadnoughts to obliterate a sudden foreign invasion. Surviving his treacherous brother’s coup attempts with high-tech airship armadas, Kai ascends the throne, crowning Sara as his queen and ensuring their abusers face eternal exile.
