Based on a line of popular toys, this limited series features four ninja warriors - Kai, Zane, Cole and Jay - battling dark Lord Garmadon and his skeleton army. The warriors are willing to go to the depths of the underworld to retrieve the fabled golden weapons of Ninjago.
...Forbidden Spinjitzu. Wasted True Potential: Master Wun finds the ninja have gone soft and must remind them of who they truly are. (S1, ep 1)
...Forbidden Spinjitzu. Questing for Quests: The ninja search for a quest to reignite their Spinjitzu training. Unfortunately, NINJAGO City is enjoying a rare period of peace. (S1, ep 2)
...Forbidden Spinjitzu. A Rocky Start: The ninja embark on a road trip through the Desert of Doom, a region supposedly inhabited by a giant scarab beetle! (S1, ep 3)
...Forbidden Spinjitzu. The Belly of the Beast: To repair the Land-Bounty, the ninja must retrieve a critical engine component that has been swallowed by a giant scarab beetle. (S1, ep 4)
...Forbidden Spinjitzu. Booby-Traps, and How to Survive Them: The ninja team up with Clutch Powers to enter a mysterious pyramid where they inadvertently unleash an ancient evil. (S1, ep 5)
...Forbidden Spinjitzu. The News Never Sleeps!: Lil' Nelson takes a job as a paperboy, which is more difficult than it sounds in a city overrun by scorching Pyro Vipers. (S1, ep 6)
...Forbidden Spinjitzu. Ninja vs. Lava: The ninja find themselves trapped in a pyramid and must escape encroaching lava to warn NINJAGO City of a new Serpentine invasion. (S1, ep 7)
...Forbidden Spinjitzu. Snaketastrophy: The Serpentine attack on NINJAGO City is seen from an unexpected perspective - with a live newscast delivered by Gayle Gossip. (S1, ep 8)
...Forbidden Spinjitzu. Powerless: The ninja rush to the NINJAGO Museum of History to recover a dangerous scroll before the Serpentine sorceress Aspheera finds it. (S1, ep 9)
...Forbidden Spinjitzu. Ancient History: While Aspheera pursues revenge on the "Treacherous Deceiver" who betrayed her, the ninja make a startling discovery... (S1, ep 10)
...Forbidden Spinjitzu. Never Trust a Human: This flashback episode tells the story of Young Wu and Young Garmadon meeting Aspheera and teaching her the secrets of Spinjitzu. (S1, ep 11)
...Forbidden Spinjitzu. Under Siege: The ninja find themselves under siege at the Monastery, trying to protect Wu from the wrath of Aspheera... (S1, ep 12)
...Forbidden Spinjitzu. The Explorer's Club: The ninja must break into the Explorer's Club in order to obtain the second Scroll of Forbidden Spinjitzu. (S1, ep 13)
...Forbidden Spinjitzu. Vengeance is Mine!: Aspheera arrives at the Monastery of Spinjitzu to confront Wu, forcing one of the ninja to make a heroic sacrifice. (S1, ep 14)
...Forbidden Spinjitzu. A Cold Goodbye: Having learned Zane is not dead, Master Wu prepares to go after him, but Lloyd and the other ninja take matters into their own hands. (S1, ep 15)
...Forbidden Spinjitzu. The Never-Realm: The ninja arrive in the Never-Realm and are helped by a tribe of Ice Fishers who tell them Zane has been imprisoned by the Ice Emperor. (S1, ep 16)
...Forbidden Spinjitzu. Fire-Maker: The Ice Emperor learns of the ninja's arrival and sends his Blizzard Samurai warriors to destroy them and the villagers who sheltered them. (S1, ep 17)
...Forbidden Spinjitzu. An Unlikely Ally: Lloyd runs afoul of the Ice Emperor's Blizzard Samurai, but is rescued by a strange wolf with whom an unlikely friendship develops. (S1, ep 18)
...Forbidden Spinjitzu. The Worst Ninja of All: Back in NINJAGO City, three criminals learn of the absence of the ninja and stage a breakout of Kryptarium Prison. (S1, ep 19)
...Forbidden Spinjitzu. The Message: Lloyd and his wolf-companion find a cave with the Mech inside and a message from Zane that provides a clue to his fate. (S1, ep 20)
...Forbidden Spinjitzu. The Traveller's Tree: Cole embarks on a quest in hopes of finding the legendary Traveler's Tree, supposedly guarded by a fearsome beast. (S1, ep 21)
...Forbidden Spinjitzu. Krag's Lament: Cole awakens inside an icy cavern belonging to a legendary beast, and attempts to escape, only to discover a surprising truth. (S1, ep 22)
...Forbidden Spinjitzu. Secret of the Wolf: The Ice Emperor summons an enormous Behemoth to attack Lloyd and his faithful wolf companion. (S1, ep 23)
...Forbidden Spinjitzu. The Last of the Formlings: Akita tells the story of the "Choosing" and how she and her twin brother Kataru went looking for their animal forms. (S1, ep 24)
...Forbidden Spinjitzu. My Enemy, My Friend: The Ice Emperor's terrible Ice Dragon strikes again, laying waste to the Ice Fisher's village, forcing the ninja to go after Lloyd. (S1, ep 25)
...Forbidden Spinjitzu. The Kaiju Protocol: Back in NINJAGO City, Wu and Pixal attempt to locate the Never-Realm, and accidentally unleash a creature from the Departed Realm. (S1, ep 26)
...Forbidden Spinjitzu. Corruption: Discover what really happened to Zane after his arrival in the Never-Realm, and how he fell under the sway of the villainous Vex. (S1, ep 27)
...Forbidden Spinjitzu. A Fragile Hope: Having discovered the terrible truth of Zane's fate, Lloyd finds himself imprisoned and alone in the clutches of the Ice Emperor. (S1, ep 28)
...Forbidden Spinjitzu. Once and for All: Nya, Jay, Cole and Kai face off against the Ice Emperor's dragon, while Lloyd and his newfound allies confront the Emperor himself! (S1, ep 29)
...Forbidden Spinjitzu. Awakenings: As the Never-Realm saga concludes, the power of friendship is pitted against the corrupting power of the Scroll of Forbidden Spinjitzu. (S1, ep 30)