Secrets of Forbidden Spinjitzu: The Ice Emperor

The Ninjas arrive in the Never-Realm, Cole lost the Travelers Tea they could use to get back and try to find shelter while wolves attack them, but villagers save them and take them to their village. One of them tells the Ninjas about the Ice Emperor and that Zane is in the Emperor's palace. Meanwhile, Vex, the advisor, tells the Emperor that strangers have arrived and prepares to attack the ninjas.

The ninjas and the villagers prepare to fight the Blizzard Samurai. While fighting Lloyd and Cole realize that some of them are made of Ice and some were corrupted people. Grimfax extinguishes the Hearth Fire. However, after they defeat the Blizzard Samurai, Kai tries to make fire, Aspheera stealing them a while ago, using his elemental powers by believing in himself, and succeeds in restoring the Hearth Fire, gaining the title "Fire maker".

The Ninjas help the villagers to build weapons in case the Blizzard Samurai return again. Lloyd begins his journey to the Ice castle with the Titan mech tracker that Nya gives him to find it. On his road, he is attacked by wolves, but one of them forces them to retreat. Later, Lloyd gets ambushed by the Blizzard Samurai, but he successfully evades them. He arrives at the Land Bounty, finding it damaged by the freeze. The wolf that forced the others away strangely follows and stays with him. The tracker locates the mech, giving Lloyd hope to find Zane.

When Ultra Violet learns that the Ninjas have gone missing, she and The Mechanic plan to escape. In the escape route, they begin to discuss who is the worst ninja. They are soon interrupted by Fugi-Dove, an infamous criminal. They continue talking along the route. Once they have escaped, Pixal catches them and they are thrown back into their cells.

Back in the Never-Realm, Cole was telling the story of Wu and Zane facing Aspheera. Meanwhile, Lloyd and 'Red' were searching for the Titan Mech. An eagle appears and attacks them. Lloyd and Red enter a cave for safety. They realize that the Titan Mech was held there. Lloyd finds a message from Zane, he repairs the mech, and finally he and Redhead out.

Cole decides to climb a mountain to find a legendary Traveler's Tree where he encounters a misunderstood Yeti, whose family was killed by the Ice Emperor, which he has to fight.

Jay and Nya were going up the mountain to go find Cole. Cole ends up in a cave where Krag, the Yeti, was. He realizes that the Krag didn't want to hurt him. Krag shows Cole where the Traveler's Tree is and they find it. Jay and Nya meet Cole, who tells them that Krag wanted to help him.

Lloyd and Red take on their journey to find Zane. Meanwhile, A lightning bolt strikes, unleashing a robot. Red was hurt so Lloyd took her somewhere safe, but when Lloyd woke up, a girl named Akita comes out of nowhere and tries to tell Lloyd she is only a shapeshifter.

Akita tells her story to Lloyd. Akita and Kataru go alone to get their shapeshifting powers, and they both find them. Meanwhile, Boreal: the Ice Emperor's Dragon, Vex, and the Ice Emperor freeze the whole village. When Akita and Kataru arrive, Boreal freezes Kataru.

Back in Ninjago City, Wu and Pixal attempt to locate the Never-Realm and accidentally unleash The Preeminent. Now P.I.X.A.L. has to send her back to the Departed Realm.

This is the story of when Zane first came to the Never Realm: Vex, bitter and seeking revenge from his enemies, meets Zane, who has arrived in the Never Realm and has lost all of his memories. He tricks Zane into believing he is the Ice Emperor, ruler of the realm with Vex being his trusty advisor. Prompted by Vex, Zane uses the Scroll of Forbidden Spinjitzu to brutally punish Vex's enemies and takes over the Never-Realm, placing it under an eternal winter.

Having discovered the terrible truth of Zane's fate, Lloyd tries to help him remember his true identity, but Vex persuades him into believing Lloyd is a liar. Lloyd is locked up in the dungeons, where he meets Kataru, Akita's brother who has been kept captive for a long time. When all hope seems lost, Grimfax frees them, having believed Lloyd's story and offering to team up with them. Meanwhile, the other Ninjas are attacked by wolves, but prevail when they find the Land Bounty and repair it.

Nya, Jay, Cole, and Kai face off against Boreal, while Lloyd confronts the Ice Emperor himself. Meanwhile, Kataru and Grimfax try to stop the ice army from getting to Lloyd. As Akita wanted revenge, she went to find the ice emperor and tried to kill him.

Lloyd helps Zane regain his memories. Akita is reunited with Kataru, and the ninjas are all reunited. The ninjas return to Ninjago City using materials from the Traveler's Tree to make the tea.