A mysterious object crashes near the great valley, and Petrie's untrustful uncle arrives in search of it, believing it to be "a storm of cold fire", a susposed rock of great powers.

Littlefoot and his pals set off in search of a "stone of cold fire" that fell from the night sky. Since he's the only one who has seen it though, nobody really believes him. Petrie's uncle Pterano offers support only because he thinks the stone has secret powers and wants it for himself but conceals this from the rest. The young dinos must figure out the truth, before Pterano gets the power.—Ash

When a mysterious asteroid flies over the Great Valley, Littlefoot is the only one to have witnessed it. Now, along with his dinosaur gang, Littlefoot sets out to find the asteroid, which is rumored to be a Stone of Cold Fire, and is said to have extraordinary powers. But trouble ensues when Petrie's unscrupulous uncle Pterano plans to use it's power in a diabolical plot to control the valley and create a paradise. When Pterano kidnaps Ducky, Littlefoot, Cera, Petrie and Spike set out on a rescue mission and must work to claim the Stone before Pterano can.—Blazer346