As her senior year of high school starts, Laurel is just beginning to adjust to Tamani's absence when he suddenly reappears, telling her he must guard her against the returning threat of the trolls that pose a danger both to her and to Avalon.
Fourteen-year-old Matt, Tuava-Li the elf, and Tomtar the troll continue their race to the North Pole to try to save their worlds, but unexpected horrors await whoever journeys beyond the Gates of Vattar.
Fourteen-year-old Matt forms an uneasy alliance with Tuava-Li the elf and Tomtar the troll in an attempt to restore to well-being the tree at the northern pole whose roots bind the worlds together, while Matt's nine-year-old sister Becky tries to free their captive parents with Asra's help.
A young man with a mysterious past and a penchant for inventing things leaves the troll who raised him, meets an unhappy princess he has loved from afar, and discovers a plot against her and her father.
Eccentric Aunt Sally comes from Canada to babysit the Anderson children while their parents are on a trip to Paris and every night the bedtime story adds another piece to a very suspect family history.
Nip and Tuck, two troll brothers, share silly experiences, including building a house without a roof, getting lost on the way to their own picnic, and sharing a traveling itch.
Gus, a troll who loves to sing, makes everyone happy with his songs until his desire for gold becomes so strong that he no longer has time to use his beautiful voice.
A young man with a mysterious past and a penchant for inventing things leaves the troll who raised him, meets an unhappy princess he has loved from afar, and discovers a plot against her and her father.
As Rollo, the troll leader, escorts Clipper to her people in the Forbidden Forest, Ludicra decides to send a rescue party in search of Rollo, but in the Great Chasm, the rescue party itself runs into trouble.
