It's Valentine's Day, and Cam is at school when she learns her mother is about to give birth.

After her brother tells her she is too little to play with him, Lulu, dressed as Ladybug Girl, makes her own fun.

Guided by a magic rhyme, Jack and Annie travel to ancient Baghdad on a mission to help the Caliph disseminate wisdom to the world.

When an elderly friend is injured, the Alden children offer to help him with his window-washing business in their small town of Greenfield and agree to help him solve a riddle that has arrived in a mysterious invitation.

Jack and Annie travel in their magic tree house to the land of the mystical selkies to seek a magical sword for Merlin.

The Aldens are spending a week at Camp Seagull on beautiful Claw Island. But as soon as camp begins, they realize that someone is not playing fair. Everything begins to go wrong for the Aldens they lose their luggage, Henry misplaces the camp flag, and the campers on the other team use one of Jessies ideas to score points for themselves. Are some campers so desperate to win the Olympics that they are willing to cheat? The Boxcar Children are...

While on a mission to prove to Merlin that they can use magic wisely, Jack and Annie travel to seventeenth-century Venice, Italy, to save the city from disaster.

Elmore Green likes being an only child, so when his parents bring a new small person, his baby brother, into the house, he isn't pleased and does his best to keep the new small person out of his life.

The magic tree house takes Jack and Annie to Antarctica to search for the fourth secret of happiness for Merlin.

The Aldens visit Grandfather's friend at the Ogopogo Retreat and aided by puzzling clues, embark on a treasure hunt to prevent the retreat from being sold.