you receive a letter & were invited to a tournament on an undocumented island with others who have unique elemental powers. As you went there you saw many masters of elements even Ninjago's heroes [Llyod, Kay, Jay, Cole, Zane & Nya]. Elemental Masters were led to the main hall for the opening ceremony where Chen explained the rules of the Tournament. You are the Master of [any power]

Chen: "As you can see, lose & you are out. Break any rule, you are out. Never bite the hand that feeds you..."