Freshman Randy Cunningham learns that he's been chosen to be Norrisville's newest Ninja.

Freshman Randy Cunningham learns that he's been chosen to be a ninja.

Ninja must save his classmates.

Randy learns that a beloved Norrisville philanthropist is his enemy.

Randy and Howard crash Bash's big party, only to discover it's a plot.

Randy and Howard share a lunch table with the outcast group.

When Howard is captured by McFist, Ninjat must rescue him.

While trying to save a science project, Randy accidentally resurrects a mad scientist, Jerry Driscoll.

Trouble strikes when Randy misuses the Ninja Nomicon.

Randy must learn how to balance his duties and social life.

When Randy runs out of smokebombs, he must find a sacred tree whose sap is the key to making more.

A frozen student from the 1980's is un-thawed, and Randy must reunite him with his lost love.

Randy learns a valuable lesson about respect and humility.

The Ninja must save the town from a giant robot.

Randy and Howard get revenge on a French exchange student.

The Ninja must figure out how to free students from Detention Island.

Randy loses the Ninja Nomicon.

A feud breaks out when Howard is accepted into a club and Randy isn't.

Journalist Debbie Kang scores the scoop of the century: Randy Cunningham is the Ninja! Randy breaks a sacred rule by removing Plop Plop, the ancient guardian, from his post.

Randy runs out of smokebombs.

Randy and Howard must sacrifice everything.

Randy inadvertently mind-wipes himself and develops amnesia, forcing Howard to fill in as the Ninja!

Mac Antfee returns to Norrisville.

Howard becomes Randy's manger at McFist-O-Plex.

Randy steals a pair of shorts in order to win a soccer shoot-out.

All the boys at Norrisville High are entranced by the new girl.

McFist introduces a new hero (himself), "Lucius OêThunderpunch."

The Ninja outs McFist as a villain to the entire town!

Randy and Howard stumble back in time and do battle with the Sorcerer.