Zane, not amused, freezes Jay in a block of ice while he takes his place on the couch. With their new powers, the Stone Army is defeated and the Ninja get ready to face the final battle. The episode ends with Rufus handing Lloyd a comic, saying he has earned it. Faith decides to remain here to lead the Hunters and try making the Realm a better place, while Wu and the Ninja ride each a dragon back home. Meanwhile, the other four ninja search the sewers of Ninjago for the Time Twins' lair after discovering Krux's lab and run into several Serpentine led by Skales, who reveals that the Vermillion are the offspring of the Great Devourer.
Lloyd is taken aboard the Mechdragon and flown off, after his father is thrown off the dragon and into the sea below. Lloyd is sent to stay watch over the Oni Mask and he finds out it's too quiet. At the last moment Zane aka Snake Jaguar throws his shurikens at Lloyd costume. Nya informs them that she has found a real-estate agent named Patty Keys who will help them find a place to live. The Ninja speed on, and are winning, but in the final stretch, Lord Garmadon uses his Mega Weapon to create a giant crevasse in the ground. Once there, they find an ancient mech that the First Spinjitzu Master used to fight the Overlord.
The Ninja from the present arrive and fight back, before realizing that the only way to heal the damage done is to destroy the Mega-Weapon. The ninja arrive in Destiny's Bounty and rescue Wu, but Lloyd gets captured by Harumi who forces him to watch how the Colossi destroys the Bounty with Baby Wu and the Ninjas Cole, Jay, Zane and Kai trapped in it. Jay and Cole go to Mega Monster Amusement Park and chases around them around the park and finally captures them. In the Realm of Oni and Dragons, the Dragon Hunters release the Ninja and Faith after realising that Iron Baron cares only about himself. Cole and Zane go there undercover with new personas. Also, the Sky Pirates were behind Jay, making this all a plan! Cole, Jay and a couple of policemen take down Killow together.
Nya tells Jay that she also saw her future: the first time she met Jay. However, everyone is recalled up into action when the Overlord is revealed to have survived in the Digiverse and takes over all technology. Meanwhile the ninja face their tests of fear and get the Scroll Of Airjitzu. At once point, Cole contemplates stealing the cup, but is berated by his father and decides to make him proud by performing and winning the cup. In Ninjago, after being discovered, Mystaké reveals her true Oni nature to Garmadon and confronts him, allowing Skylor to borrow his powers and escape, while she is presumably killed. Meanwhile, in Ninjago, the Resistance keeps Harumi hostage at their hideout and come up with a plan to have Mystaké disguised as her and Skylor as a prisoner goes to Garmadon's base so that Skylor could borrow his powers and thus be able to control Colossi. He finds a switch which opens the doorway, revealing a vault where the Stone Army rest.
As everyone swoon over him, Jay flirts with Nya. Garmadon is enraged, since 'his ship is bigger'. Although the ninja initially have the upper hand, they are soon forced to retreat inside the Monastery and hold the Oni back as long as possible. Meanwhile, Baby Wu grabs the keys while the Sons of Garmadon are distracted and the Ninja escape. The Ninja realise the real Dark Lord wasn't Garmadon, it was the Overlord. It takes place before Season 8. But when they arrive, they find the Stone Army, Garmadon, Nya and the new Super-Weapon have gone to the coast.
However, after comments from fans, it was soon revived and has been in production ever since. The Ninja start a food fight and befriend Soto, the captain who trapped Nadakhan into the Teapot of Tyrahn and told the Ninja how to stop Nadakhan: Tiger Widow venom, and bust themselves and Soto out of Kryptarium. The ninja manage to use the Nindroids' lasers to destroy the power station, but this comes at the momentary loss of P. In the meantime, Nadakhan finds out what has happened to his crew of , and eventually captures Sensei Wu after accidentally being summoned by him. He tells Garmadon that they need a Super-Weapon unlike anything ever seen.
During the ensuing battle, Acronix reveals that he knew Kai's father and then escapes after faking his own demise; he then meets up with Dr. The other ninja lose their elemental powers because of this. Once inside, they are met with the Min-Droid. Meanwhile, Lloyd, Nya and Cole are stuck on Tiger Widow Island, with no way to get off, so they decided to build a raft to get off. Wu reveals to the four Ninja that Morro was his first student. The Great Devourer's venom melts through the roof of the vault and starts dripping on the statues, bringing them to life.
Despite the aesthetic changes, it continues the story of the previous seasons and is not a reboot. Shortly after Zane goes into the S. They start building a Raid Zeppelin, the blueprint Jay wrote his message on. The Nindroids obtain the dangerous object, with the ninja going in pursuit of them. Misako also reveals that Wu is rapidly aging, while Kai realizes that the mark on the Vermillion helmets is his father's blacksmith brand; he and Nya thus set out separately to find answers. Master Wu buys the story, ordering them to get the black tea.