[SYNOPSIS]
Once in a thousand years.
The gods of sky, wind, water, fire, and earth gather in Dongnae to open a secret festival.
At its center lies the 'Spring of Divine Joy,' created by the combined power of the gods.
Jiryeol, a servant of the earth god who managed the mysterious spring, grows weary from endless duties and loneliness.
One day, a limping crane named Lumi appears.
Lumi has set out to find the mysterious spring to heal her grandmother's leg—the woman who has cared for her throughout her life.
Jiryeol asks Lumi to take over managing the spring, and Lumi accepts the dangerous secret for her grandmother's sake.
Then, a shocking truth about the spring's miraculous power comes to light,
and the world of gods, hidden from humanity, falls into great chaos.
Will the gods be able to make a new choice to coexist with humans?
And will Lumi be able to heal her beloved grandmother's leg?