Wart is a young boy who aspires to be a knight's squire. On a hunting trip he falls in on Merlin, a powerful but amnesiac wizard who has plans for him beyond mere squiredom. He starts by trying to give him an education, believing that once one has an education, one can go anywhere. Needless to say, it doesn't quite work out that way.

We learn the true stories behind various nursery rhymes. Little Jack Horner: a servant to a city official was delivering a present to King Henry VIII, baked, as was the custom of the time, in a pie. The present was the deed to a valuable estate, which Horner stole. Mary, Mary, Quite Contrary: Mary Stuart brought "quite contrary" French style to the Scottish court. After a series of disastrous romances, she was jailed; the jailer's son, captivated by her, helped her escape. After a brief but disastrous attempted coup, she fled to England, where her sister, Queen Elizabeth, soon grew jealous and had her imprisoned. London Bridge: The bridge, finished in 1209, was soon lined by shops with luxury apartments upstairs, turning into a popular commercial and cultural zone. The Great Fire that broke out in 1666 spread to the bridge, but the houses were rebuilt. Over the ages, things decayed. In 1823, things finally got bad enough that the bridge was demolished and replaced.

A little boy wishes he could bring a Christmas tree to his father who is working as a weatherman in Antarctica.

The Ghostly Trio make mischief by slipping Casper an enlarging potion.

The evil Eastern magician Ali Booboo feeds an ensorcelled apple to Nightmare, turning her into his slave. Casper and Wendy must pursue Booboo to his castle in the clouds to rescue their friend.

Casper helps a lost ghost named Something to find his mother.

Wendy's aunts and Casper's uncles magic up mischievous twins of Casper and Wendy to cause trouble around the Enchanted Forest

Wendy wishes on a star for new red dancing shoes, but this wish causes an unintentional consequences.

Wendy helps Casper remove a spell from a prince.

The Evil Witch had cast a spell on Wendy's house and they ran away. Casper will end the witching hour til everything is back to normal.