Peter Hausner

When Cole returns to Yang's haunted temple to seek revenge on the former Airjitzu master who turned him into a ghost, he accidentally uses a powerful dark magic blade that traps him in the temple and unleashes the spectral forms of Ninjago's greatest villains. While Cole battles for his freedom, the ninja must return their ghostly foes to the Departed Realm before they gain the power to remain in Ninjago forever. Also includes six bonus episodes from...

The ninja try to flee from the rest of the Stone Army that has been brought to life by the Devourer's toxic venom - and things get a lot worse when Garmadon arrives with a 'Helmet of Darkness' and seizes control of the Stone Army.

Chen pits everyone against each other in a ludicrous roller skating event called Thunderblade and all contestants team up against the Ninja; so the Ninja share inside information on Chen to get help from a new alliance in order for Lloyd to move on in the tournament.

The ninjas are suspicious when their arch enemy Lord Garmadon moves in to help searching for his missing son Lloyd - but realize they have to work together in their attempt to rescue Lloyd from the snakes inside the unstable Fire Temple that is built on a volcano.

The Ninja travel to the Village of Stiix to find the thief who stole the scroll of Airjitzu, but the self-serving Ronan isn't keen to sell it cheaply so the Ninja must figure out a way to make money on the docks – and when they fail to make enough cash, the Ninja decide to steal it – but have a run in with Moro and Sowlarcha.

After the Fangpyres join forces with the Hypnobrai, Lloyd awakens Pythor – the last remaining snake of the Anacondrai tribe. Pythor lures Lloyd under his spell and steals a map from him that will show him where the remaining two snakes tribes dwell and Uncle Sensei saves Lloyd from doom.

When the four ninja follow the mysterious falcon into the woods, they stumble on a hidden work shop where Zane learns the secret about his past and in the process, finally knowing who he is, he is the first ninja to unlock his true potential.

Chen has failed to bring the return of the Serpentine War but Clouse reveals there's another way – his daughter has the ability to absorb the power of every fighter she comes across, so she can complete the ceremony – and Skylor finally sees her father for who he truly is and manages to send an SOS to the Ninja.