When Nya loses control of her elemental powers, the ninja search for answers, which may lie with the former master of water, Nya’s mother. 

Nya's mother, Maya, arrives with advice on how to regain control of Nya’s power. Zane and P.I.X.A.L. discover something else may be behind the disturbances.

The ninja embark on a mission to uncover the source of a mysterious power signal that is disrupting marine life, and Nya’s powers. 

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. 

Nya and her mother Maya try to escape the evil Prince Kalmaar, who intends to seize the throne of his father, the benevolent King Trimaar. 

Prince Kalmaar deceives the Merlopians and turns the ninja into fugitives. 

Aided by Benthomaar, Kalmaar’s adopted brother, the ninja fight their way through the palace to the Hydro Bounty and must escape Kalmaar's forces. 

The tragic tale of Benthomaar is revealed… a tale filled with treachery, betrayal, but also a glimmer of hope. 

Nya and the ninja race to obtain the Storm Amulet before Prince Kalmaar can obtain it and use it to awaken the doomsday serpent, Wojira. 

In Ninjago City, Wu, Cole, Kai, Ray, and Misako must get into the Explorer’s Club and recover the Storm Amulet before King Kalmaar and his troops. 

King Kalmaar attacks Ninjago City to obtain the Storm Amulet but runs into an unexpected obstacle in the form of a determined young papergirl 

Nya learns the history of the Storm Amulet. Wu, Kai, Cole, Ray, and Misako try to prevent King Kalmaar from escaping the city with the Storm Amulet. 

Kalmaar awakens Wojira and sets his sights on the destruction of Ninjago City. 

The ninja do all they can to evacuate the city as Kalmaar's assault on the surface-world of Ninjago begins 

The ninjas suffer a defeat at the hands of Wojira and Nya contemplates a decision that may save her friends and her city but could spell her own doom. 

Nya leads the ninjas against King Kalmaar and Wojira in the final battle to save Ninjago City.