Lego ninjago: the search for zane (chapter book #7)

Ninjago(TM): Rebooted! The ninja are back and put to the test to rescue Zane! The ninja have received a mysterious message from Master Chen: Zane is alive and hidden somewhere on his secret island! But in order to find Zane, the four ninja must compete in a dangerous tournament against other elemental masters. Determined to rescue their friend, Kai, Cole, Jay, and Lloyd make the treacherous journey. But finding Zane will be more challenging than they know, and Master Chen's island is filled with deadly traps. They will need to work together in order to overcome this new enemy, or risk being knocked out of the tournament--permanently.