Zelo was the happiest boy in the world. He had a loving family. His awesome hero yongguk appa, the best daddy ever and His soooooo pretty and nice himchan umma... They were so happy, they had everything they needed until one day, when the bad bad king took his umma away for himself. Zelo cried and begged him not to take his umma but they left anyway. After that his appa never smiled again, also he was always too tired because he would just work and work all day that he didn't have time to spend with Zelo anymore. Zelo was so lonely. He wanted his perfect family back again. Thus one day Zelo decided to go and get his umma back from the bad king. On his way he met a brave and handsome knight named jongup. He promised the knight that he'll marry him if he helps Zelo get his umma back. but He didn't know that Jongup was a prince... He surely wouldn't hurt his own father for Zelo, would he?