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Season guide

Ninjago: Masters of Spinjitzu: Master of the Mountain

16 episodes Premiered Jul 6, 2020 Updated Sep 25, 2026

The ninja are invited to the beautiful Shintaro Kingdom to celebrate the young Princess Vania’s birthday. At first glance, the Ivory City looks like a pristine place, but the ninja soon uncover a dark, obscure, long-forgotten underworld: The Dungeons of Shintaro. Once inside, they must fight their way to freedom through a maze of tunnels paved with dangers and strange creatures ruled by the merciless Skull Sorcerer.

Previously on Ninjago: Masters of Spinjitzu

Season 13 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

  • ⚡ Directly follows the overarching narrative developments of Ninjago: Masters of Spinjitzu Season 12.
  • ⚡ Faction dynamics and core character alliances shift under escalating external stakes.
  • ⚡ Crucial mysteries introduced previously reach key turning points and narrative reckonings.
  • ⚡ Sets up serialized story arcs that build directly toward the climactic season finale.

Season overview

The ninja are invited to the beautiful Shintaro Kingdom to celebrate the young Princess Vania’s birthday. At first glance, the Ivory City looks like a pristine place, but the ninja soon uncover a dark, obscure, long-forgotten underworld: The Dungeons of Shintaro. Once inside, they must fight their way to freedom through a maze of tunnels paved with dangers and strange creatures ruled by the merciless Skull Sorcerer. The ninja must choose their path wisely…

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Season 13 Episodes

Episode Guide

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Binge Efficiency Engine

Season 13: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

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75%
Mytharc (4): Crucial lore & season climaxes
Core (12): Character development & subplots
Side Quest (0): Standalone / filler
S13·E1 Mytharc

Shintaro

Jul 6, 2020 · 11 min

The ninjas travel to attend the birthday party of Princess Vania, in the distant Kingdom of Shintaro, and bring along Master Wu.

S13·E2 Core

Into the Dark

Jul 6, 2020 · 11 min

The ninjas are welcomed to Shintaro, where Cole and Princess Vania investigate a mysterious visitor and explore a secret underground mine.

S13·E3 Core

The Worst Rescue Ever

Jul 7, 2020 · 11 min

The ninjas attempt to rescue Cole, but the bickering of his fellow prisoners alerts the Skull Sorcerer, and soon the ninjas are prisoners too.

S13·E4 Core

The Two Blades

Jul 8, 2020 · 11 min

In order to escape the Skull Sorcerer's chain gang, the ninja must convince the Munce and Geckles to put aside their distrust and work together.

S13·E5 Core

Queen of the Munce

Jul 9, 2020 · 11 min

Separated from the others, Nya, Jay and Lloyd follow a Munce named Murt deep into the mountains, where they meet the Munce Queen.

S13·E6 Core

Trial By Mino

Jul 10, 2020 · 11 min

Kai and Zane discover a party of Geckles, who suspect them of working with the Skull Sorcerer and bring them to their leader, Chancellor Gulch.

S13·E7 Core

The Skull Sorcerer

Jul 13, 2020 · 11 min

Cole must trust his instincts and make the right choices to find his way to the surface and alert King Vangelis of the dangerous Skull Sorcerer.

S13·E8 Mytharc

The Real Fall

Jul 14, 2020 · 11 min

Princess Vania tries to catch the falling Master Wu and Cole. But with too much weight on her wings, they find themselves plunging into the mountain.

S13·E9 Core

Dungeon Party!

Jul 15, 2020 · 11 min

Having survived their fall into the mountain, Cole, Wu and Princess Vania befriend a motley group of survivors called the Lowly.

S13·E10 Core

Dungeon Crawl!

Jul 16, 2020 · 11 min

Cole leads the Lowly, Princess Vania and Master Wu in a series of fruitless efforts to find a way out of the inescapable Rock-Bottom.

S13·E11 Core

Grief-Bringer

Jul 17, 2020 · 11 min

Nya and Kai attempt to bring the Munce and Geckles together in an effort to defeat their mutual enemy, the Skull Sorcerer.

S13·E12 Core

Masters Never Quit

Jul 20, 2020 · 11 min

Pursued by a magma monster, Cole, Princess Vania, Wu & the Lowly arrive at a mysterious temple deep in Shintaro Mountain.

S13·E13 Core

The Darkest Hour

Jul 21, 2020 · 11 min

The ninjas, the Munce and the Geckles take refuge in the Geckle Strong-Cave after they're all forced to flee by the Grief-Bringer's arrival.

S13·E14 Core

The Ascent

Jul 22, 2020 · 11 min

Cole, the Lowly, Princess Vania and Wu learn that the stone-mech is powered by Elemental Earth energy and use it to blast their way out of the mountain.

S13·E15 Mytharc

The Upply Strike Back!

Jul 23, 2020 · 11 min

Cole and the Upply arrive at the Skull Sorcerer's Keep and find the ninjas locked into cages and the Geckles and Munce back at work in the chain gang.

S13·E16 Mytharc

The Son of Lilly

Jul 24, 2020 · 11 min

As Cole and the Skull Sorcerer face off, the Geckles and Munce storm the Keep. Plundar frees the ninjas from their cages so they can join the battle.

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