Helen Plum Library

The evil wizard Maldred has stolen the gold and silver keys which will allow him to release the Naga, the powerful earthquake dragon at the center of the earth--so Drake and several of the other Dragon Masters travel to the Naga's Temple in the Dragon Islands, to try and stop Maldred, and prevent him and the earthquake dragon from destroying the kingdom

Diego is under the spell of the wizard Maldred who wants to control the Naga, an enormous dragon that lives deep within the Earth, and plans to use Diego to steal the two keys necessary for that purpose; the first key is guarded by Argent, the silver dragon, and Jean his dragon master, so Drake, Bo, Carlos, and their dragons travel to Gallia to try and stop the theft and break the spell on Diego

In their third trip through the enchanted library, Cleo and Evan land in "The Werewolf's Curse" where Evan is promptly bitten by a werewolf, and the two need to find the cure--and the next key--before the full moon rises and Evan becomes stuck in this horror story forever

"No case is too hard for Nickelodeon's Rusty Rivets! When the key to the city goes missing, everyone assumes Rusty's Botasaur buried it. But it's up to Rusty and Ruby to dig up the truth! "--

Melanie Gate, a foundling with a peculiar talent for opening the unopenable, agrees to accompany a gearling automaton named Traveler on his quest to find a home, only to be pursued by the most dangerous wizard in the land and, along the way, discover her true powers

When Evan and Cleo sneak into the enchanted library at night they find that Locke has already forced his way into a book, and when they follow they find themselves in a plane that promptly crashes into the Amazon rainforest--and with the help of a boy named Gabriel, (and a friendly sloth) they have to survive the jungle and find the golden statue that is the next treasure in their quest before Locke gets his hands on it

"When a strange key opens a door to good fortune and to Opportunity, who will stay with her for seven serendipitous days, Lila soon discovers that the person who lost the key will do anything to get it back"-- "Lila is trying to find her way in the world--to figure out her thing. Her talented sister, Parisa, and athletic best friend, Melanie, both seem to have found theirs... and Lila can't help feeling left behind. But just when she thinks she might...