Masters of Spinjitzu: a new force to save the world! The world of Ninjago is in terrible danger. An army of skeletons has invaded from the underworld, under the command of the evil Lord Garmadon. Their goal: capture the Four Weapons of Spinjitzu, artifacts so powerful it is said no one being can wield them all at once. Now Garmadon's brother, the heroic Sensei Wu, must gather four young men and train them in the ways of the ancient art of Spinjitzu....

The Ninjago ninja feel lost after Zane gives the ultimate sacrifice to save New Ninjago City, and Lloyd must convince the others that they need to stick together, now more than ever.

In this twist on "Little Red Riding Hood," a certain wolf trains to be a ninja in order to catch his prey, but he is not the only one mastering a martial art.

"Engaging images accompany information about ninja. The combination of high-interest subject matter and light text is intended for students in grades 3 through 7"--Provided by publisher.

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?

Anxious Ninja experiences difficult emotions that paralyzes him until his friend gives him tips on how to handle his anxiety.

Angry Ninja gets upset a lot. He’s like a ticking time bomb. When his sister takes his things without asking, it makes Angry Ninja so frustrated. Until one day, a buddy shows him a simple strategy to control his hot emotions.

Positive Ninja wasn’t always so happy and optimistic. She used to struggle with negativity until she learned a strategy that would change her forever.

The magic tree house takes Jack and Annie back in time to feudal Japan where the siblings learn about the ways of the Ninja.

"Shunned by everyone for being the son of an evil warlord, a teenager seeks to defeat him with the help of his fellow ninjas."