Eliza (Lacey Chabert) and Debbie (Danielle Harris) are two sisters who don't always get along. But their relationship is put to the test when Debbie's life is in danger, and Eliza might have to give up her power to talk to animals.

An eight-year-old boy genius and his friends must rescue their parents after the adults are abducted by aliens.

The gang goes on a trip to check on Velma's younger sister, Madelyn. She's been studying stage magic at the Whirlen Merlin Magic Academy, where apparently there have been sightings of a giant griffin. The gang decides to investigate.

A collection of key events mark Bruce Wayne's life as he journeys from beginner to Dark Knight.