ninjago season 2 ep 8 "Wrong Building To Rob"

Kai, Jay, Cole, and Zane investigate a group of mysterious Mask Robbers who have been causing trouble in Ninjago. Following their clues, the ninjas enter a suspicious building, where they discover the robbers hiding inside. But the mission quickly turns into a fight! The ninjas must work together using their Spinjitzu and elemental powers to take down the Mask Robbers and uncover what they are planning. Little do the ninjas know, a much greater danger is waiting for them…