The twins go on a treasure hunt when history teacher Orin Johnson quits his job and spend his life savings on a rundown piece of real estate in the hopes of finding a legendary pirate treasure.
Tom and Annie turn their scientific expertise toward go-karting when their friend Howie is challenged to prove himself on the track. But he has lost his nerve, and his challenger has copied a flawed design discarded by the Edisons.
Tom and Annies hopes of hosting an elegant black tie party in honor of a well-to-do English guest turn into bedlam when Paul accidentally sets a tarantula loose in the house.
After finding a baby elephant, Paul and Joey decide to build a home for her and pledge an oath of secrecy to keep their pachyderm pet a permanent playmate.
The elephant is on the loose again; this time wearing a priceless, jewel studded harness, but when she finds her way back to Paul and Joey, the harness has vanished and her trainer is arrested for the crime.
After discovering that the gems in the Pali Harness are fake, Tom and Annie set out in search of the man who made them while Paul is left to entertain the Maharajah of Pali.
An evening of watching video launches Paul into a new movie making career and Tom and Annie into an investigation of the origins of a doctored video tape that threatens to ruin the reputation of a family friend.
When a mysterious presence threatens to close down Mammas Pizza Palace, Annie offers to run the restaurant for one day so she and Tom can witness the unexplained phenomenon first hand.
When Tom and Annie are invited to the reading of George Kelsys video will, they, and two of Georges closest friends, find themselves involved in a mysterious treasure hunt in the old mansion.
Intent on saving the financially troubled Weston Lanes Bowling Alley, Lance persuades the Edisons to join his team in the annual pro/am bowling tournament.
When Lance is almost arrested for trying to use phony concert tickets, Tom drags Annie along on an investigation to track down the man who gave Lance the tickets.