Katie, Lily, and Jasper attach their flying Gyroscopic Sky Suite to the Moose Tongue Lodge and Resort, where they mingle with other child heroes found in books, and where they become embroiled in a mystery involving lederhosen-clothed quintuplets and a screaming ventriloquist.

As Lily, Katie, and Jasper try to return home after their adventures in Delaware, they face a protoplasmic monster, sleeping gas, a runaway rice cart, sentient lobsters, and spies of the Awful and Adorable Autarch of Dagsboro.

Home from their latest Delaware crime-stopping adventures, Lily Gefelty and her friends Katie, Jasper, and Drgnan Pghlik face killer tarantulas and teenaged vampires when they try to rescue Lily's mother, who has been possessed by a menacing zombie that wants to take over the world.