Tag the owl, Skyla the squirrel, and Blaze the newly hatched firehawk, journey north to the Crystal Caverns searching for the next piece of the magical Ember Stone--but the evil vulture Thorn is also after the stone, and his ice leopards are close behind the heroes.

Their magical map is leading Tag, Skyla, and Blaze closer and closer to The Shadowlands, Thorn's territory--but now the Ember Stone has fallen into the well-named Lullaby Lake, which is defended by fairies who sing intruders to sleep, and the friends must figure out a way to convince the "nixies" to help them retrieve it before Thorn gets his claws on it.

Now that Thorn has been defeated, Tag and his friend Skyla embark on a new quest, to find Blaze's lost family and the other firehawks who disappeared through a portal to the Cloud Kingdom; but the Cloud Kingdom is full of new dangers, and when giant birds seize Blaze and carry her off Tag and Skyla are left to try and free their friend--with only a magic map to guide them, and the threat of the shadowy shape that seems to be following them.