When the fate of their world, Ninjago, is challenged by great threats, it's up to the ninja: Kai, Jay, Cole, Zane, Lloyd and Nya to save the world.
The ninjas are snapped out of their post-hero complacency when Lord Garmadon's son Lloyd shows up and tries to pick up where his father left off.
Back in training mode with the looming threat of Lloyd and the Hypnobrai, Zane wanders after a Falcon and lands himself in a heap of trouble.
Lloyd unlocks a second tribe, the Fangpyres, to help him regain control. The ninjas take action when the Fangpyres attack Jay's family's village.
After the Fangpyres join forces with the Hypnobrai, Lloyd awakens Pythor -- the last remaining snake of the Anacondrai tribe.
Lloyd moves in and tries to help out but just gets in the way. Pythor awakens the Venomari and the Constrictai, and an all-out snake war breaks out.
Pythor declares himself the destined leader who'll reawaken The Great Devourer, an ancient beast that can't be killed and will consume all of Ninjago.
When the four ninjas follow the mysterious falcon into the woods, they stumble upon a hidden workshop where Zane learns the secret about his past.
Jay and Nya must cut short their first date in Mega-Monster Amusement Park as the Serpentine are on their way to retrieve one of four fang blades.
The ninjas go undercover as a dance troupe and enter a talent contest in their quest to win the Blade Cup, where one of the fang blades is hidden.
The ninjas are suspicious when their archenemy Lord Garmadon moves in to help search for his missing son, but they realize they have to work together.
The ninjas try to infiltrate the Serpentines' inner sanctum and walk into a trap. When Lloyd's rescue mission fails, only Lord Garmadon can help.
The ninjas hastily journey to the lost city of Ouroboros to try to stop Pythor from awakening The Great Devourer, but it's a race against time.
Disaster threatens as the ninjas must fight to defeat the all-consuming Great Devourer in a desperate attempt to save Ninjago.
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