Ninja vs. Ninja is a LEGO Ninjago book that was released in 2015. It takes place within the plot of LEGO Ninjago: Masters of Spinjitzu, during the events of the episode "Versus."
It takes a ninja! The wisecracking Masters of Spinjitzu are back with all-new adventures on Cartoon Network and all-new toys.
Cole, Jay, Kai, and Lloyd have managed to defeat every opponent they've faced in the Tournament of Elements so far, but now the tournament pits ninja against ninja, and only one can remain.
An all-new adventure based on an episode from the hit LEGO® Ninjago TV show on Cartoon Network!