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.

Morro possesses Lloyd and uses him to infiltrate the tea shop and attack the other ninja, who have mysteriously lost their powers.

After learning that Wu's staff holds a clue to the First Spinjitu Master's tomb, the ninja go to Stiix to retrieve the stolen Airjitzu scrolls.

While Wu trains Nya in her new water powers, the ninja plot to steal the Airjitzu scrolls from Ronin but find that they must first fight Morro.

The ninja go to Sensei Yang's dangerous haunted temple to learn Airjitzu, and Nya quits her training but must use her powers to elude Morro's ghosts.

Using their new Airjitzu powers, the ninja race to climb a perilous mountain to find the Sword of Sanctuary before Morro can claim it.

After being betrayed in the Cloud Kingdom, the ninja battle Morro for the Sword of Sanctuary and learn he is ultimately after the Realm Crystal.

As the ninja close in on their final clue to the location of the First Spinjitzu Master's tomb, Ronin steals the Sword of Sanctuary to give to Morro.

The ninja journey to the First Spinjitzu Master's tomb to claim the powerful Realm Crystal, but they must navigate a series of traps -- and Morro.

As the ninja race to keep Morro from releasing the Preeminent, Morro uses the Realm Crystal to summon an army of ghosts from the Cursed Realm.

While the ninja try to protect Stiix, Lloyd encounters his father in the Cursed Realm, and Nya unlocks her true potential to take on the Preeminent.