Ninjago: Masters of Spinjitzu - Season 15

First aired: 4/4/2021 16 episodes

When Nya's powers are disrupted, the Ninja set off in search of answers and find themselves at the bottom of endless oceans where they discover that her powers are linked to an ancient mythical creature.

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Episodes

1. A Big Splash

Aired: 4/4/2021

The ninjas ambush a new villain named Miss Demeanor. Nya creates a water cyclone to stop her but loses control of it, threatening a nearby village.

2. The Call of the Deep

Aired: 4/4/2021

Maya attempts to take charge of Nya's life to solve her problems. Zane and Pixal respond to a distress call at sea.

3. Unsinkable

Aired: 4/11/2021

Nya, Jay, Zane, Pixal and Lloyd board a new submarine, the Hydro Bounty, and set off to find the source of the energy signal disrupting Nya's powers.

4. Five Thousand Fathoms Down

Aired: 4/11/2021

Nya and Maya use underwater suits to travel to an ancient temple after they realize its power source is the only way to get the Hydro Bounty running.

5. The Wrath of Kalmaar

Aired: 4/18/2021

Nya and Maya attempt to get out of a tough predicament. Meanwhile, Jay risks his life while trying to restore power to the Hydro Bounty.

6. Long Live the King

Aired: 4/18/2021

After Nya and Maya's rescue, the ninjas are escorted to Merlopia to face King Trimaar. However, a betrayal turns the ninjas into fugitives.

7. Escape from Merlopia

Aired: 4/25/2021

The ninjas survive the palace flooding — but are pursued by ripper sharks. Benthomaar comes to help and leads them to the hangar bay.

8. The Tale of Benthomaar

Aired: 4/25/2021

A flashback tells the tale of Benthomaar, revealing how King Trimaar finds him as a baby and raises Benthomaar as his own.

9. The Storm Amulet

Aired: 5/2/2021

The ninjas return to the island of the Keepers and ask their leader to keep an amulet safe in Ninjago City — but they make a surprising discovery.

10. Riddle of the Sphinx

Aired: 5/2/2021

Kai, Ray, Cole, Wu, and Misako receive Nya's warning and rush to the Explorer's Club. Benthomaar encourages Nya to use her power in a surprising new way.

11. Papergirl

Aired: 5/9/2021

As Kalmaar and the ninjas wage a battle in Ninjago City, the storm amulet ends up in the possession of a determined paper girl.

12. Master of the Sea

Aired: 5/9/2021

Benthomaar tells Nya the tale of Nyad. Meanwhile, Master Wu, Kai, Cole, Ray, and Misako try to keep Kalmaar from taking off with the storm amulet.

13. The Calm Before the Storm

Aired: 5/16/2021

The doomsday serpent, Wojira, rises from the sea. In Ninjago City, Glutinous emerges from the water with a dire warning.

14. Assault on Ninjago City

Aired: 5/16/2021

The ninjas leap into action after Kalmaar and Wojira arrive in Ninjago City, bringing a tsunami that floods the entire city.

15. Nyad

Aired: 5/23/2021

Overpowered by Wojira, the ninjas retreat to the NGTV building to regroup. Nya might make a decision that she may never be able to come back from.

16. The Turn of the Tide

Aired: 5/23/2021

Kalmaar's temper proves too much for Wojira to handle during battle while the ninjas try to help Nya fulfill her destiny.