All ten 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 ninjas 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 ninjas gather to take part in Master Chen (Ian James Corlett)'s Tournament of Elements. The episodes are: 'The Invitation', 'Only One Can Remain', 'Versus', 'Ninja Roll', 'Spy for a Spy', 'Spellbound', 'The Forgotten Element', 'The Day of the Dragon', 'The Greatest Fear of All' and 'The Corridor of Elders'.