Hundreds of years ago, in the underground, the land of waters, a young beautiful witch, and a handsome prince fell in love with each other. Unfortunately, the prince decided to follow his father’s -the King- orders and married another girl. The witch got mad and put a powerful spell on the underground. The prince turned into a two-headed dragon with two different personalities. The wizard made a key which was the only way to undo the curse. But the key is even hidden from her so that it could never be done. Now, hundreds of years later, an eight-year-old girl “Sayeh” from upper ground (the place that we all live in) asks her Mima about a story, so she tells Sayeh the story of a dragon treasure which has gotten well-known during centuries. Sayeh gets curious and asks one of the village boys “Iraj” about the treasure and what he knows about the dragon…