"It is said that the tears of a mermaid become a mysterious jewel."
Aisha, the girl who didn't cry over any bullying.
On the day she runs away from the village, the girl becomes a mermaid.
Then comes the empire's only boy, Grand Duke Hayden Elikin.
"We are a family, Aisha Elikin."
A life that has changed overnight. Hayden kindly takes care of Aisha, saying she's her lost sister, but that's obviously a lie...
Can Aisha, who has learned the life of a mysterious mermaid and a gorgeous lady, remain with Hayden's secret? Is it Aisha or Hayden who shed tears of jewels?