| 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. |
| Name | Character | Episodes |
|---|---|---|
| Nicole Oliver | Queen Halbert | 40 |
| Brian Drummond | Axl | 40 |
| Giles Panton | Clay Moorington | 40 |
| Erin Matthews | Princess Macy Halbert | 40 |
| Vincent Tong | Jestro | 40 |
| Alessandro Juliani | Aaron | 40 |
| Maryke Hendrikse | Ava Prentis | 40 |
| Ian Hanlin | Lancelot "Lance" Richmond | 40 |
| Maryke Hendrikse | Ave Prentiss | 20 |
| Ian Hanlin | Lance | 20 |
| Erin Mathews | Macy | 20 |