In the world set two Kingdom of Hope. The first Kingdom of Hope is The Kingdom of Hoshia and the second is The Kingdom of Hatena. These two kingdom have the mercy of the god and goddess the most. But appart from the two Kingdom of Hope, there is another kingdom. It's the Kingdom of Despair and Hatred which is The Kingdom of Synclodia. The three gods, which is Hoshia, Hatena and Sync, were ones good childhood friends of the past. But an incident had triggered the Hidden Memory of the young innocent prince, Sync. The memories were the history of the 3rd Hope Kingdom's ,Synclodia, vengence,despair and hatred. The young prince had no choice but surrender to the memories.

700 Years Into The Future

The Queen of the Hoshia Kingdom had given birth to three cute baby boy. The eldest was named Jung Yunho while the second is named Park Yoochun and the youngest was named Shim Changmin. At the same time around the same year, the Queen of Hatena Kingdom had given birth to two beautiful baby boy. The eldest was named Kim Jaejoong while the youngest was named Kim Junsu. The Synclodia Kingdom's Queen too had given birth to a baby boy and three baby girl. The boy had been named Cho Kyuhyun. The eldest of the girls were given the name Jessica Jung while the second is Kwon Yuri and the youngest is Kim Hyun-A.

Time passes and all the prince matured to be charming gentlemens while the princesses matured to be more beautiful as day passes and evil-minded + ty. And they all attended the same school.