A gifted 11-year-old boy secretly builds an air balloon with his friend Emma, to prove to his father that everything in life is possible.

At Santa Claus School, the principal has called a meeting. Lucia, her parents Julius and Claudia and everyone else at school are excited. But the tension is replaced by a shock when the headmaster cancels Christmas. He seems confused, and it soon becomes clear that he is trapped in a Christmas trauma from his younger days as Santa Claus. Lucia sets out to find out what has happened and with the help of the younger student Elias and a magical time machine, she travels back in time in the hope of saving Christmas.

To celebrate Ms. O's 100th anniversary, the agents go back in time to witness her last case as an agent. However, something goes wrong and they change the future for the worse.

In 1960s Alabama, an orphaned young boy staying with his grandmother at a hotel, stumbles across a conference of witches and gets transformed into a mouse by the Grand High Witch.

A girl builds a rocket to travel to the moon in hopes of meeting the legendary Moon Goddess.

In this musical special, the Octonauts must find a way to hold back hungry swarms of coral-eating starfish to save a new friend's fragile reef home.