Something has been taken from the both of them — or everything, really — and both Junmyeon and Yifan want it back. Badly. They just don't know it yet.

There is obvious unrest in the Kingdom of Egron. There has been for the past fourty years. The royals only think it is pent up hatred, but when an unknown magic is detected in the Opal Garden and Junmyeon gets a taste of the destruction coming their way, the benders of the four elements have no choice but to reunite as one to defeat those who wish to destroy the peace in the Kingdom.   

Junmyeon and Yifan had been sending letters to each other. The only problem was that their countries were at war, Junmyeon being a prince and Yifan being a General at War. They're letters are found and Junmyeon is executed.  This is the aftermath.