The world of Ninjago is full of adventure. The four ninja's are Kai, Cole, Jay, and Zane. There are four golden weapons. The first Ninjago sets were made in 2011. There sets still coming out today. Usually there is the ninjas verses some bad guys. There is a main leader for the bad guys and the green ninja is the leader for the ninjas along with Sensei Wu. There is 4 seasons out and the 5th season is going to come out.