Maythawadee and Maythawalai are sisters who love the same guy, Phakinai. Maythawadee sets a plan to send her sister to marry the king of another land to get rid of her because she knows Phakinai loves Maythawalai. During her departure, a strom hits the boat Maythawalai is on and it sicks it. Phakinai tries to protect Maythawalai, however, both of them drown together. Maythawadee's spirit was then caged underwater. She watches and protects any antiquities that fell from boats and kill people who are coming to steal. Maythawalai is then reborn as the daughter of a colonel who studies archaeology.

Prot is a kind man who lost his memory. He is enlisted to continue acting as the heir of a wealthy family by Paron the real heir, to help find evidence of the betrayal going on inside and outside of the company. Although he is not used to being a hiso, he makes the best of it. Everyone adores him for being a good person while Naet, the fiancee of real Paron also begins to like him and their love begins to bloom.