Ninjago(TM): Rebooted! The wise-cracking ninja are back with all-new adventures on Cartoon Network and all-new toys on sale everywhere. Now available in ebook!An all-new adventure based on the latest season of the hit LEGO(R) Ninjago(TM) TV show on Cartoon Network!
#10 is the third book based on the conclusion of the season "Rebooted." If you're reading in order, after #9, the books skip over several episodes without explaining anything. The ninja's battle against Overlord has taken them to the moon! But don't worry, they're heading home to save Ninjago City. It tells of how Overlord is finally beaten, and Zane's ultimate sacrifice. Great book for kids, but for adults, good luck not crying reading the final pages.
(Parental warning: at the end, a bad guy and a good guy 'die' in this book, via mutual ice explosion, but both later come back to life in the books/TV series. So avoid this if that's too much for your kids, but it went over mine's heads, they either didn't care or just didn't get it. And loved the book anyway).