The LEGO Nexo Knights book parts include sets that are associated with, or come from, LEGO Nexo Knights-themed books. These books, often published in collaboration with publishing companies, sometimes include exclusive LEGO pieces, minifigures, or mini-builds related to the Nexo Knights theme.
Nexo Knights was a fantasy-based LEGO castle theme based on the realm of Knighton, and follows the adventures of five young Knights who battle to defend their home from Jestro, Monstrox, and his monster army. Nexo Knights gives its characters and sets a futuristic look combining both technological and magical aspects.