After destroying the Cursed Realm and saving Ninjago, the Ninja have discovered newfound fame. But they must be careful what they wish for because a new evil named Nadakhan the Djinn is freed and a new age of piracy has begun.
The Ninja must find our as much as they can about Nadakhan before he finds the Realm Crystal, but after the Ninja are labeled enemies by the world they used to protect, our heroes find themselves hunted by their old friend, Ronan.
Falsely imprisoned, the Ninja are at their lowest point, but find an unlikely friend in an old enemy. Meanwhile, Nadakhan rescues his marooned crew and gains a new perspective, along with a new mysterious plan.
The Ninja are on a collision course - to find the map to stop Nadakhan, they must first find him. Meanwhile, Jay makes a wish to change his future, but it could alter his past indefinitely.
The ninja travel to Tiger Widow Island to get venom from a tiger widow spider to use against Nadakhan. The plan goes awry when Nadakhan and his sky pirates arrive to intervene.
Jay must do what it takes to escape the villainous clutches of Nadakhan whilst the remaining ninja attempt to survive and escape Tiger Widow Island.
The last remaining Ninja dare to infiltrate the Sky Pirates in an attempt to save Jay and defeat Nadakhan once and for all.
When the last two remaining Ninja are safe-guarded in a place no one would dare look, the Sky Pirates discover their whereabouts and attack in search of the one who holds the power to unlock Azad's full potential.õ
The last remaining ninja recruits help from old allies in order to stop Nadakhan's ceremonial wedding from taking place while also making a daring search for the rest of his friends.
The rescued ninja rush to save Nya, but they are too late - the wedding to Nadakhan is complete. When Nadakhan acquires infinite wishes, Jay only has one.
Wu opens a tea shop to help with his retirement and asks the ninja to help him advertise it. Lloyd is asked to go on a solo mission, but discovers that it is a trap set by a cursed spirit named Morro that has escaped from the Cursed Realm.
Wu reveals that the spirit that has taken over Lloyd's body was of his first pupil, the Master of Wind. The ninja then embark on a mission to save Lloyd. Wu and Misako tell Nya she holds a power she never knew about.
The ninja arrives in Stiix to find Ronin, who has the Scroll of Airjitzu. However, Morro is also on the hunt for the scroll and isn't too far behind.
Morro has the scroll. The Ninja find a new way to learn Airjitzu by visiting the Haunted House of Sensei Yang. Nya doubts she is the Water ninja, so Ronin takes her to Souri Cave.
Now that the ninja know Airjitzu, they prepare to hunt for the second clue to the tomb. They must embark to Cloud Kingdom and retrieve the Sword of Sanctuary. It's a race against Morro and his ghostly allies to get to Cloud Kingdom before the gateway passes.
In Cloud Kingdom, where destinies are written, the Ninja must get the Sword of Sanctuary by meeting with the Master Writer. But Moro's escape from the Cursed Realm has put the future in chaos.
The Ninja have the items they need for the tomb of the First Spinjitzu Master, but before they can figure out the last riddle that leads to the location of the tomb, Ronan steals the sword to give to Moro in exchange for his soul.
The ninja uses Ronin's airship to travel to the First Spinjitzu Master's tomb, but they find that Morro has beaten them to it. Can they catch up to him, beat the deadly tests and find the tomb before he can?
Morro, with the realm crystal, has opened a portal to the Cursed Realm and ghosts have taken over the City of Stiix. The ninja team go undercover to infiltrate the city and get Lloyd to the crystal before Morro's new master can arrive.
Lloyd is trapped in the Cursed Realm and the Preeminent has arrived in Ninjago. Now it's up to the remaining ninja to stop the Preeminent from cursing Ninjago, but her army of ghosts aren't making it easy.
When the ninja receive an invitation to partake in the Tournament of Elements and a clue that Zane might be alive, they accept and travel to a lost island owned by notorious crime lord Master Chen in order to save their friend.
The ninja discover that the tournament isn't about glory, but about Chen stealing everyone's elemental powers.
To drive the Ninja apart, Chen and Clouse put Jay and Cole to face eachother.
In the last round of Phase One, the elemental masters compete in the Thunderblade, where Lloyd must compete against the master of form.
With only 8 people left in the tournament, the ninja discover a spy among the competitors.
Chen entices the contestants to hunt down Nya while Lloyd discover's Chen's plan to steal everyone's power so that he can complete a spell and turn his worshipers into Anacondrai, bringing the return of the Serpentine War.
Chen only needs Lloyd's powers to complete the spell and tries to enlist the Fire Ninja by promising to share secrets about his parents. All the while, Lloyd tries to rescue the Ninja, pitting him in a showdown with Chen.
While the Ninja control the island, Chen figures out Skylor can complete the Spell. Meanwhile, the Ninja must figure out their Dragon Powers.
With Chen's spell complete, he needs only one ingredient to complete the transformation: the sweat of a true Anacondrai.
With the elemental alliance scattered across Ninjago and Chen having discovered how to make the spell permanent, the balance is at risk as Garmadon makes his last stand against evil at the corridor of elders.