"Don't forget. You're my wife."

A former diver is reincarnated into the world of her favorite game as Hina, an unimportant maid. She is content just watching her favorite character, General Soha of the Water Kingdom, from afar, but when things start to diverge from the game she knows so well, she finds herself embroiled in a life-changing conflict.

Marked for execution as a traitor and cast into the sea, she draws upon knowledge from her past life to swim fearlessly through the raging waves to her survival. However, her graceful form is mistaken by the fearsome and ruthless villain Shuen as the legendary Mermaid Princess, and she is kidnapped and forced to become his wife...

Now she's stuck in a loveless temporary marriage with the villain. Everything inside her is telling her to reject him... And yet, why can't she resist his overbearing yet awkward passion?