When her long-estranged father invites sixteen-year-old Liv Varanakis to help him film a documentary about his theories on Atlantis, she looks forward to reconnecting but discovers he may have invited her to Greece for a very different reason.

Xena and Xander have been looking forward to their vacation in the peaceful country village of Blackslope. But, when a huge monster begins to terrorize the town, the young detectives are faced with a mystery that seems impossible to solve. Sherlock Holmes, Xena and Xander's famous ancestor, investigated the case of a horrible beast in Blackslope, but that was nearly a hundred years ago. It couldn't be the same creature after all this time-could it?...

As a documentary is filmed at their middle school, roles reverse for worrier Trevor and his lifelong best friend Libby, who has always rescued him from embarrassing situations but is now focused on being "cool" and no longer wants to be his "friend friend."

When a second documentary crew arrives at Westside Middle School to film a renowned Hollywood designer's renovations, seventh-grader Trevor Jones is chosen to join the design team and faces a makeover of his own.