In the beginning of time, there lives a girl named O-Nu-Ri in an island called Won- Chun Khang. No one knows when and where O-Nu-Ri was born and coming from. Won-Chun Khang is a beautiful place where spring, summer, fall and winter originated. In this peaceful land, O-Nu-Ri lives with a mother-like big crane named “Ya-Ah”. One quiet night, O-Nu-Ri is kidnapped by several men. Here, O-Nu-Ri‘s long journey begins in search of Ya-Ah in Won-Chun Khang.