When Littlefoot's grandfather falls ill, the only way to cure him is with a flower from the forbidding land of the mists, which holds unexpected perils and danger.
This time, while building a hideaway in their new home of the Great Valley, Littlefoot and the gang rescue a mysterious egg from two scheming egg-nappers and make a starling surprise - and new friend - when the egg hatches.
When a sudden shortage of water threatens all life in the great valley, The gang of young dinosaur must cooperate with a group of bullies to make a risky journey outside the valley and find the cause.
A toy manufacturer buys the 'Dolly Dearest' factory in Mexico, where the malevolent spirit of Sanzia, a devil child, has taken refuge in one of the porcelain dolls, and eventually takes control of his daughter.