Spending the summer in his grandfather's rundown town, ten-year-old Ben meets an adventurous local girl and together they learn that the town's veterinarian runs a secret hospital for imaginary creatures.

Once again, three friends are sent back in time by a magic book and they find themselves prisioners of the evil pirate Blackbeard.

Joe, Sam, and Fred are back, but who figured on Joe's sister Anna and her cat Cleo getting into the act. This time the trio are dodging crocodiles on the Nile, out-witting the evil high priest in tombs and temples, and searching for an escape route from the top-secret mummy-making chamber.

Joe, Fred and Sam demonstrate some of their professional wrestling moves when they're transported to ancient Rome and forced to fight as gladiators in the Colosseum.

"Pearl doesn't mean to be a troublemaker.""Trouble just seems to find her." Pearl Petal and Ben Silverstein can't wait for their first official day as apprentices of Dr. Woo, veterinarian for imaginary creatures. That is, until they are tasked with clipping the sasquatch's toenails. "Gross!" Then Pearl spots a monster in the lake behind the hospital. Even though they were told not to leave the building for "any" reason, Pearl sets off for a closer...

After Rafe is happily accepted into art school in a big city, he discovers more academic rigor and competition than he expected, compelling him to find inspiration in other exciting activities.

As they are about to go on stage, Joe, Fred and Sam are transported back to the time of Zeus and the other gods in Greek mythology.

The Time Warp Trio are transported to the Viking world of 1000 A.D.

Cass finds herself alone and disoriented in a dream-like world, while back at home she is in the hospital in a coma with Max-Ernest desperately searching for a way to awaken her.

When a mummy disappears from the local history museum while Cass and her friends Max-Ernest and Yo-Yoji are there, they try to solve the case in order to clear their names and, they hope, discover the Secret they have been seeking.