Jack and his younger sister take a trip in their tree house back to ancient Egypt, where they help a queen's mummy continue her voyage to the Next Life.

Their magic tree house takes Jack and Annie back to retrieve a lost story in ancient Greece, where they witness the original Olympic games and are surprised to find what girls of the time were not allowed to do.

Their magic tree house takes Jack and Annie deep into the sea, where they meet up with dolphins, sharks, and octopi as they search for the answer to an ancient riddle.

Their magic tree house takes Jack and Annie back to the Wild West, where they experience excitement and danger and try to solve a riddle.

The magic tree house takes Jack and his sister Annie to the Great Plains where they learn about the life of the Lakota Indians.

While collecting things to sell for a school White Elephant sale, two friends are given a lamp with unexpected magic qualities.

A boy goes to live with his magician uncle in a mansion that has a clock hidden in the walls which is ticking off the minutes until doomsday.

Gwendolen Chant and her brother Cat find the Chrestomancie Castle family's magic powers difficult to counter with the inferior powers of the Coven Street witches.

Cyrgon's hired minions have kidnapped Sparhawk's wife Queen Ehlana demanding he surrender Bhelliom or she will die.

When Merlin is weighed down by sorrows, the enchantress Morgan asks Jack and Annie of Frog Creek, Pennsylvania, to use their tree house to travel to a land of fierce samurai and great beauty, in the capital city of Edo (now the city of Tokyo) in old Japan in the 1600s to learn one of the four secrets of happiness.