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.
Misako, Master Wu and Clutch Powers go missing while exploring an uncharted island and the ninja must pick up their trail. (S3, ep 33)
Having survived their journey to the island, the ninja venture inland where they encounter a dragon and living statues! (S3, ep 34)
The ninja find themselves captured by the 'Keepers of the Amulet', who seem to be treating Jay particularly well. (S3, ep 35)
As Jay is sacrificed to the sea serpent that terrorizes the island, the other ninja begin to suspect events on the island are not all as they seem. (S3, ep 36)
When Nya loses control of her elemental powers, the ninja must search for answers. Could they lie with Nya's mother, the former Master of Water? (S3, ep 37)
Nya's mother Maya arrives with advice on how to regain control of Nya's power. Zane and Pixal discover something else may be behind the disturbances. (S3, ep 38)
The ninja embark on a mission to uncover the source of a mysterious power signal that is disrupting both marine life and Nya's powers. (S3, ep 39)
Nya and Maya discover the source of the energy pulse that has been affecting Nya's powers, and come face-to-face with a dangerous new villain! (S3, ep 40)
Nya and her mother Maya attempt to escape from the evil Prince Kalmaar as he schemes to overthrow his father, the benevolent King Trimaar. (S3, ep 41)
Prince Kalmaar deceives the Merlopians and turns the ninja into fugitives. (S3, ep 42)
Escape from Merlopia: Aided by Benthomaar, the ninja fight their way through the palace to the Hydro Bounty and must escape Kalmaar's forces. (S3, ep 43)
The tragic tale of Benthomaar is revealed - a tale filled with treachery and betrayal, but also with a glimmer of hope. (S3, ep 44)
In Ninjago City, Wu, Cole, Kai, Ray and Misako must get into the Explorer's Club and recover the Storm Amulet! (S3, ep 46)
Nya and the ninja must find the Storm Amulet before Prince Kalmaar does and uses it to awaken the doomsday serpent, Wojira! (S3, ep 45)
Prince Kalmaar attacks Ninjago City to obtain the Storm Amulet, but runs into an unexpected obstacle - a determined young papergirl! (S3, ep 47)
Nya learns the history of the Storm Amulet as Wu, Kai, Cole, Ray, and Misako try to prevent King Kalmaar from escaping the city! (S3, ep 48)
Nya leads the ninja against Kalmaar and Wojira in the final battle to save Ninjago City! (S3, ep 52)