The high-tech Kingdom of Knighton is in trouble. The King's Jester has stolen the strange talking Book of Monsters. Using its evil magic, he summons an army of dangerous Lava Monsters and attacks. It is up to the brave but inexperienced Nexo Knights to come to the rescue!

After touring the world, Bodi takes some time off and returns to his village. When he learns that the girl group, K-9, doesn't know who rock legend Angus Scattergood is, he is compelled to join the musical competition show, 'Battle the Beat,' to inspire a new generation of rock stars. But after joining the show, Bodi quickly realizes he has bitten off more than he can chew when he becomes an overnight TV personality sensation.

Jestro, the Book and their monsters are still on the loose, causing havoc all over the kingdom. No place is safe. In their relentless search for the lost magical Books, they are growing ever powerful and it will only be a matter of time before they can conquer the entire kingdom. The NEXO Knights are now an efficient monster-fighting unit, but even so, they have to upgrade their equipment and NEXO powers to keep up with the ever-growing threat.

Recruited by the mysterious Dr. Tezla, the greatest race car drivers in the world roar onto the track. So gear up for the radically customized supercars and adrenaline-powered action.