Listen to this article The next big thing to come out of LEGO Ninjago will air tomorrow – Ninjago Legends: Monstrosity! The latest animated series called Ninjago Legends: Monstrosity, tells the story of what happens to Kai after he travels to explore the merged lands in Dragons Rising. Through various mediums, this spin-off story finds Kai in the dark and dangerous Land of Monsters. The first three episodes will be available to stream tomorrow via YouTube. Check out the poster below and the handy link to the stream (once it begins tomorrow).