The adventure takes place in the futuristic Kingdom of Knighton. It focuses on the Nexo Knights as they journey to defeat Jestro the evil jester, the Book of Monsters, and their lava monster army. Clay leads the Nexo Knights, which include Macy, Lance, Aaron, and Axl. Together, under their mentor Merlok 2.0, they band together to defeat Jestro.
Episodes S01E01 The Book of Monsters Part 1 2015-12-13 22m
During the graduation ceremony for the new Knights of Knighton, Jestro the jester is ridiculed for his terrible, uh, jestring. Distraught, he's seduced by the powerful and evil Book of Monsters until Merlok the Magician tries to stop Jestro by using his most powerful magic spell. more S01E02 The Book of Monsters Part 2 2015-12-13 22m
After a magical explosion, Jestro discovers that he still has the Book of Monsters and together they decide to attack and destroy the Kingdom. Their monsters seem like too much for the new Knights of Knighton until an old friend emerges in a new form. more S01E03 The Power of Merlok 2016-01-13 22m
When Jestro and the Book of Monsters start using their monsters to ravage the countryside, the Knights get an awesome new HQ to fight him, the mighty, powerful Rolling Castle known as the Fortrex. more S01E04 The Knights' Code 2016-01-14 22m
Clay and Lance tussle over who should lead the Knights and protect the King who's toddles off on a PR tour of the kingdom. While fighting off Jestro and his monsters, Lance realizes that nobody knows the Knights' Code like Cla. more S01E05 Fright Knight 2016-01-15 22m
The Knights explore a strange forest looking for a Book when Jesto unleashes the Book of Fear on them and a new monster, Whiparella, uses her minions to induce the Knights' worst knightmares. more S01E06 The Golden Castle 2016-03-03 22m
When Lance stars in a movie about the Knights, the Book of Monsters want to eat the script to learn more about modern society. Jestro uses his spy, Lavaria, to infiltrate the set and attack the Knights. more S01E07 The Maze of Amazement 2016-01-19 22m
Jestro and the Knights are both trying to get the Book of Deception. But the book has used its powers to create a powerful maze in the Hill Country, near Axl's home, and it's a race to complete the maze and get the Boo. more S01E08 The Black Knight 2016-01-20 22m
When the Knights of Knighton can't defend the outer villages of the kingdom, a mysterious Black Knight appears to take on Jestro and his monsters. Who is he really and is he a new ally or a new foe? more S01E09 The Book of Total Badness 2016-01-21 22m
Jestro uses the baddest book yet, the Book of Destruction, to make monsters that capture the Knights one-by-one so that he can turn his attention to attacking the King's Castle. more S01E10 The Might and the Magic 2016-01-22 22m
Seeing Jestro's monster army about to destroy the King's Castle, Aaron rides off to gather his cohorts. In the meantime, the King and Queen bravely go out to defend the city against the monster menace. Is this the end of Knighton? more 
