Lego Ninjago, masters of Spinjitzu

"Unlike his fellow Masters of Spinjitzu, Zane is not human. In fact, technically he's very similar to the Nindroids--the ninjas' newest enemies! So what will happen when Zane, feeling alone and apart from his teammates, is invited to join the Nindroids? Will Zane betray his friends?"--Back cover.

Unlike his fellow Masters of Spinjitzu, Zane is not human. In fact, technically he's very similar to the Nindroids, the ninjas' newest enemies. When Zane is feeling alone and apart from his teammates, he receives an offer from the enemy. Book #9