With Mystery, Inc. on the tail of a strange object in Nowhere, Kansas, the strange hometown of Eustice, Muriel, and Courage, the gang soon find themselves contending with a giant cicada monster and her winged warriors.

While the gang travel to Scotland to visit Daphne's cousin and witness the Highland Games, they find themselves terrorized by the legendary Loch Ness Monster.

Gunner and his mother share a special bond. She supports his daydreaming and artistic pursuits, while his frequently-on-the-road father, Amos, with whom Gunner shares a strained relationship, has other ideas about where his son’s interests should lie. Gunner and his dad attempt to smooth over their differences for the sake of the family, but when his mom’s sickness worsens, Gunner disappears into stacks of books on both science and the supernatural in search of possible cures. When Gunner and his rebellious friend Jo go missing during their quest into the Water Man’s mysterious forest, Amos must immerse himself in his son’s world to find them and put his family back together.

An evil sorceress transports the gang back to the age of chivalrous knights, spell-casting wizards, and fire-breathing dragons.

On a school trip at the local museum, class troublemaker Scott Collins experiences a bizarre psychic connection with one of its artifacts – a skull. The creepy skull allows him to for-see his grandmother’s death. Of course, nobody believes him, passing it off as one of his usual tales. But after gran dies suddenly, his younger sister, Trish, for whom he shares a mutual contempt, is stunned to learn that her brother’s premonition was true. With both parents out of work and their house on the verge of foreclosure, Scott, still affected by the powers of the skull, convinces his family to accept employment as caretakers for a large Victorian house in the countryside. When they arrive they meet the owner, Trelawney, a seemingly normal man with one exception – he has the ability to speak to Scott telepathically. Scott soon discovers that the cursed skull holds the key to both of their futures.

Açela and her friends embark on an enchanting journey deep into a mysterious forest to discover the village's legend of the Tale-teller.