To prevent the Shadow Dragon from plunging the world into sky-shadow the Drake and Darma seek out a Light Dragon named Lysa, but they learn from her dragon master they need to summon a Star Dragon with a star flute, hidden within a dangerous labyrinth.

"A nest of invisible baby dragons has been discovered in Queen Sofia's castle so Drake, Worm, and Val, Carlos's cousin, must journey to the dangerous Dove Island to find the parents and the fruit that keeps the dragons' invisible powers." -- Library of Congress.

Drake and the other Dragon Masters help Wildroot, a Flower Dragon whose home is in danger, find his Dragon Master Oskar after Oskar's identity is revealed to them by the Dragon Stone.