Gacho Tribe is a story about a small group of people living on high mountains on Earth before the time of the dinosaurs. Through cultivation, the small group develops a sense of togetherness. A chief is chosen to be their leader in order to enforce equality.

To become chief, he has to be related to the family tree through blood or marriage. If someone disobeys the chief's directions, they could be stoned to death. The average life span is less than thirty years, and most people die in the winter because of infections that spread easily. It is hard for them to deal with the rough weather. Sadly, due to an absence of health knowledge, the probability of survival is very low.

Zepti, the youngest child in his tribe, fears losing his sick mother. Until one day, a miraculous stone from the sky fell and was discovered by Zepti, which cured his mother and many others.