While it has been praised as much as Havoc in Heaven domestically, it was released at a point when the Chinese animation industry was in a relatively downed state compared to that of the rest of the international community.

One day, a pangolin happens to drill a hole on the slope and the two spirits escape from the cave, causing grave harm to the nearby residents.

So the old man spares no time in growing seven calabashes, each a different color of the rainbow: red, orange, yellow, green, cyan, blue, and purple.

In a sequel series called "Calabash Brothers: Little Golden Steel", it is later revealed that there was a third demon, specifically the sister to the snake spirit, that had been in hiding underground during the whole battle.

However, upon their defeat they fuse together into a single boy with the powers of all seven (official name is "Golden Steel Brother") who successfully vanquishes the final demon.