Mysterious adventures from the past are revealed in this action-packed LEGO(R) NINJAGO(R) illustrated chapter book series with four all-new stories! The world of LEGO(R) NINJAGO(R) is changing, and Master Wu, Kai, and the other Spinjitzu Masters must face an all-new challenge unlike any they have ever faced before . . . or have they? Will a forgotten adventure from their past give them the clues they need to face the future? Find out in this action-packed chapter book series that is illustrated throughout and features four all-new adventures of LEGO mighty Masters of Spinjitzu! LEGO, the LEGO logo, the Brick and Knob configurations, the Minifigure and NINJAGO are trademarks and/or copyrights of the LEGO Group. (c)2023 The LEGO Group. All rights reserved.