Upset over his parents' divorce, Darren's lightning powers start going haywire, until he receives a mysterious bracelet that keeps his powers in check but may also prove to be connected to a string of child kidnappings in the area.

War is waging between the Changer Nation and Sakura's army. It's the ultimate battle of good vs. evil. Meanwhile, Darren's brother has developed impundulu powers, Gabriella must deal with her own emotions, Fiona makes an attempt to unite the selkie faction, and Mack must stay on enemy lines, gathering intel. But when an ancient secret is revealed, at the very heart of the war, it just may be the end of the Changer world as we know it.

Fiona, Mack, Gabriella, and Darren are Changers, a magical line of shapeshifters that can transform into mythological creatures, from werewolves and selkies to lightning birds and spirit foxes. The Changers are reeling from the attack at Wyndemere Academy. Their new enemy, Sakura Hiyamoto, is a kitsune with a unique memory-eating ability, and she's after Mack. Mack doesn't remember much about fighting Sakura at Wyndemere, a fact which worries the...

Mack, Gabriella, Darren, and Fiona are excited to spend their spring break at Wyndemere Academy, a boarding school for Changers, but Mack soon finds he is being followed by a kitsune.