After discovering that Zane may still be alive, the ninjas learn that they must compete in a Tournament of Champions if they wish to see him again.
The team learns about Jade Blades and other secrets of the Tournament of Champions. Karlof is eliminated from the competition.
The contests begin, and soon Cole is forced to battle with Jay. Zane regains his memory with help from P.I.X.A.L.
The remaining Elemental Masters compete in a roller skating competition. Cole, Karlof and other eliminations must work in Chen's noodle factory.
The ninjas form an alliance with the Elemental Masters after revealing Chen's plan. Cole and Zane break out of the noodle factory.
Lloyd and Garmadon learn of the great battle that once took place between Chen, the Anacondrai and the Elemental Masters for control of Ninjago.
It appears that all is lost when Chen drains the powers of the Elemental Masters and vanquishes Lloyd in battle to take control of his as well.
Chen and his army invade Ninjago City, but the masters have escaped the noodle factory and follow close behind. Garmadon narrowly escapes banishment.
Master Chen uses a spell to turn himself and his troops into fierce Anacondrai, but the ninjas visit Ninjago City's jail to recruit an unusual ally.
The final confrontation between the ninjas and the Anacondrai unfolds, but a great sacrifice must be made if the heroes are to save the day.
Watch Ninjago: Masters of Spinjitzu Season 4, Episode 2: Only One Can Remain online on FlixGems. The team learns about Jade Blades and other secrets of the Tournament of Champions. Karlof is eliminated from the competition.