Long time ago in a far, far away, there was 15 kingdom who ruled the beautiful and infinity like place. Every kingdom has their powerful but kind King and Queen. The 15 kingdoms were living very peacefully with a good relationship to each other. Until one day, the Kingdom of Everlasting was attacked by a serpent whose half- dragon and half- jackass named Syrfeed. 

***Kangin is a lucky man to have a loving wife named Ae- ri and two handsome sons and a gorgeous baby princess. Donghae which is 8 y/o followed by Yesung 5 y/o and Heechul 3 y/o is the three who completes Kangin's life. But everything changes when Ae- ri suffered stomach cancer, can Kangin make a right decision that will benefit his children or only hurt their innocent feelings?