Since the Overlord was defeated, Cole, Jay, Kai, and Zane have retired from Spinjitzu. Now the four ninja teach at Sensei Wu's Youth Academy, where their students play pranks on them all day.
But everything changes when the ninja visit high-tech New Ninjago City. There they meet supergenius Cyrus Borg, who warns them that a new evil is on the rise. Do Cole, Jay, Kai, and Zane have the chopas to fight the enemy of the future? Or are they about to get an unwanted upgrade?