First collection of episodes from the fourth season of the children's animation based on the line of toys by Lego. Set in the fictional world of Ninjago, the series follows a group of young Ninja who, under the tutelage of Sensei Wu (voice of Paul Dobson), are Spinjitzu martial artists in training, learning to wield their special Golden Weapons and use their unique elemental powers to protect the land from evil forces. In this instalment, the Ninja are invited to take part in the Tournament of Elements.