The Toa Metru are nearly powerless after their defeat of the Morbuzalch but they cannot rest. Instead they must venture underground to save the city of Metru Nui's Archives. The Archives contain the history of the city. The Matorun and even the Toa.

After their defeat of the Morbuzakh and the shape-shifting Krahka, the Toa Netru expect to be hailed as heroes.

"Humans and robots once lived in peace on Sentai Mountain, but those days are long gone. Now the robots are desperate to take control of the mountain and there is only one thing that can stop them-- the Exo-force team, a specially trained group of yo

"For a thousand years, all the animal tribes in Chima lived together in peace. They thrived on a powerful energy called CHI, guarded by the Lions and shared fairly by all. Then, everything changed when the Crocodiles attacked the Lions for control of the CHI. Now the tribes, led by Laval the Lion Prince and Cragger the Crocodile King, are locked in an epic battle for all of Chima!"--P. [4] of cover.

The warriors of Chima must master the power of Fire CHI to battle the ice-wielding Hunters.

"Jay, cole, Zane, Kai, and Sensei Wu are strangers in an even stranger land-- Garmadon City! But the name is not what's strange! The fact that everything is made of stone-- the streets, the buildings, the trees, even the people!-- that's the really strange part. But how do you save people who have been turned into stone who don't want to be saved, and will do anything to stop you?" -- p. [4] of cover.

Discovering the secret nest of the evil Fangpyres, Cole and his ninja team learn unexpected and shocking secrets about the Serpentine.

Jay, a member of Sensei Wu's team of ninja warriors is an inventor at heart and has an unfailing sense of humor--even in the toughest battles. But if he keeps laughing at danger, will the joke backfire on him?