Royal Blacksmiths

The four Ninja go undercover as a dance troupe and enter a talent contest in their quest to win “The Blade Cup”, in which one of the fang blades is hidden, taken from its tomb by Clutch Powers. During this, Cole meets his father, the leader of one particularly famous dance troop, who, if anything, is bossier than Sensei Wu. At once point, Cole contemplates stealing the cup, but is berated by his father and decides to make him proud by performing and winning the cup. Cole, saving his father when Pythor collapses the stage while stealing the cup, finds his true potential.

The Green Ninja

The Ninja are suspicious when Lord Garmadon, brought by Sensei Wu from the realm of darkness he fled to, moves in to help searching for his missing son - but realize they have to work together in their attempt to rescue Lloyd from the Serpentine while they dig for the third Fang Blade in the heart of the Fire Temple. Kai, after being held back by his ambition to become the Green Ninja, reaches his true potential and rescues Lloyd. It is also revealed, though Kai's own realization, that Lloyd is the destined Green Ninja. This causes grief to both Wu and Garmadon, since their family has now been further divided.

All of Nothing

At a suggestion from Lloyd to steal back the three Fang Blades as Pythor goes for the fourth, the Ninja and Sensei Wu try to infiltrate the Serpentines’ inner sanctum and walk right into a trap. When Lloyd’s rescue mission fails, there is only one person who can help them, namely Lord Garmadon. In the nick of time, Garamadon comes with the Skeleton Army and they engage in a battle against Pythor and the Serpentine, allowing Lloyd to release the Ninja and get the Fang Blades. Garmadon leaves Lloyd to follow his own path and the Ninja to destroy the Fang Blades, but Pythor follows them in secret...

The Rise of Great Devourer

Upon arriving at Torchfire Mountain, where the Fangblades can be destroyed, Pythor reveals himself and steals the blades back, leaving the Ninja to die. The four, with Wu, Nya (Samurai X) and Lloyd, haste to the lost city of Ouroboros to try to stop Pythor from awaking The Great Devourer, but it is a race against time. After a battle on a Serpentine Truck-fortress, in which Sensei Wu deliberately cuts himself off from the Ninja, all arrive at the city. At last, Pythor succeeds, but Sensei Wu follows him and forces him to see the power he has unleashed. They are then both consumed by the awakened Great Devourer.

Day of the Great Devourer

Disaster threatens as the Ninja must fight to defeat the all consuming Great Devourer in a desperate attempt to save Ninjago. In the end, only Lord Garmadon, using the Four Golden Weapons, can destroy the Devourer. The snake is destroyed and Wu is shown to have survived, but Lord Garmadon vanishes with the Weapons and Lloyd must accept the fact that he must face him one day...

Note: This is the Great Devourer and Pythor's final appearance.

Darkness Shall Rise

The ninja are helping in fixing Ninjago City after the Great Devourer was defeated. Nya informs them that she has found a real-estate agent named Patty Keys who will help them find a place to live. Nya and Sensei Wu than leave to find parts for the Ultra Sonic Raider. Sensei also reminds the ninja that their new mission is to train Lloyd. Meanwhile, Skales along with the other snake-tribe generals attempt to regain the trust of the Serpentine after Pythor’s defeat. However, Lord Garmadon persuades what remains of the Serpentine Army to follow him, and recreates the remains of Destiny’s Bounty into a ship he names “The Black Bounty”. In the meantime, Patty Keys finds an apartment for the ninja called the “Hero Suite” with a training-room suitable to train Lloyd. The apartment is expensive, so the Ninja decide to get jobs to pay for the rent, with Cole as a bank security officer, Jay a pizza delivery man, Kai a child entertainer, and Zane a sushi chef. This goes well in the beginning, but then turns out not so favorable. After stopping the Generals from kidnapping Lloyd and having Skales arrested, they settle for the lower-class flat. Meanwhile Lord Garmadon and the Serpentine fly to the Golden Peaks – birthplace of the Golden Weapons - and fuses the Weapons together into a Mega Weapon. He plans to use it to destroy Sensei and the ninja so they will never be able to train Lloyd, then the prophecy will never be fulfilled…

Note: First appearance of the Mega-Weapon.

Pirates vs Ninja

The Episode begins a few centuries ago, with the pirate crew of the Destiny’s Bounty led by Captain Soto looking for the 'Island of Darkness'. The crew leaves No Eyed Pete to steer the ship when the captain wasn’t noticing, but due to his lack of sight the ship crashes. In the present time, the ninja are training Lloyd in their smaller and more affordable apartment, but looking for a better place to train. On the Black Bounty, Lord Garmadon is discussing the Mega Weapon with the snake-generals, and he tries to use it to destroy the Ultra Dragon, who happens to be flying by. He is outraged when he is unable to destroy the dragon, but discovers Captain Soto’s journal in the ship’s cabin and accidentally resurrects the pirate-crew using the Mega Weapon. Meanwhile, the Ninja find “Grand Sensei Dareth’s Mojo Dojo”. Dareth agrees to let them use his dojo if they defeat him in a battle. Of course they do, and Dareth allows them to use his Dojo. In the meantime Lord Garmadon realizes that the Mega Weapon does not have the power to destroy, only to create, and it also drains his strength every time he uses it, so he needs time to recover. The pirates lock up Garmadon and the snakes. The Ninja start training Lloyd at the dojo, where he demonstrates his extraordinary talents. The Pirates then attack Ninjago City, taking all the money they can get. Sensei Dareth, dressed as the Brown Ninja, jumps on ship but gets captured by the pirates. The ninja go to his rescue, and while battling the pirate captain, Lloyd unlocks his Spinjitzu the first time. The pirates are later arrested, and Lord Garmadon takes back the Black Bounty…