Ethan's grandma, who is a ninja, comes to visit, and her appearance at school makes Ethan the most popular kid in class.

A story about friendship: the daring ninja learns that the greatest thrills and the best adventures are the ones we share.

The four Ninjago warriors must acquire the Scythe of Quakes in preparation for their first mission, but one obstinate ninja's ideas for completing the task could endanger both their lives and their chances of recovering the weapon.

In this twist on "The Three Little Pigs" tale, Pig One and Two neglect their ninja school martial arts training and are no match for the wolf, but Pig Three's practice and dedication saves the day. Includes glossary of Japanese martial arts terms.

When Ruby's homesickness spreads to other students at Master Willow's School for Ninjas, she uses all of the skills she has learned to help them feel better. Includes instructions for making a dragon toy two different ways.

Millie, who likes finding new hobbies, eagerly signs up for ninja school, only to learn that ninja skills, such as hiding and kicking, are a real challenge for a triceratops. Includes discussion question and dinosaur facts.

When one of his publicity stunts to help his friends take advantage of having defeated the Preeminent goes wrong, Dareth, the Brown Ninja, finds himself in trouble and surrounded by angry warriors.

To save their father from being stir-fried, two ninja chicken sisters take on a dark tangled forest, a tricky house made of corn bread, and an even trickier fox.

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

After his father is murdered and a ninja saves his life, Taro discovers the connection between ninjas and vampires and finds himself being dragged into a bitter conflict between the rival lords ruling Japan.