Decoded Decoded is a series of " " shorts taking place between season seven and season eight of the series , in which Zane ' s efforts to create a digital backup of his memory unearths a mysterious puzzle known as " the Ninjigma . " The episodes consist primarily of clip shows from the series , though with sequences of new dialogue . Summary . Legacy . Following Zane ' s return from his most recent search for Sensei Wu , he goes to the Samurai X Cave so that Nya can backup his memories . Vehicles and Mechs . After Zane becomes trapped in his memories , Nya uploads Jay ' s consciousness into the computer network in an effort to find him . They uncover a puzzle that resembles a vehicle schematic . Legendary Places . With Jay and Zane both trapped in the computer , Nya sends Cole in to try and help them , and the four examine a collection of location images . They eventually determine that the key locations are ones where they ' ve lived , and that the solution to the puzzle is the order in which they lived in said locations . Unfortunately , solving the puzzle reveals that Zane ' s systems are being hacked by an unknown adversary . Ninjago ' s Most Wanted . Nya brings in Kai to join the other three ninja in Zane ' s mind in an effort to save him from whatever hostile force is hacking into his systems . The latest aspect of the Ninjigma involves their past foes , with the Ninja trying to identify which of them might be responsible for Zane ' s condition . However , Nya then interrupts the boys with a warning that something is attempting to penetrate the Samurai X Cave , and pulls Cole out to address the threat . The Digiverse and Beyond . Without Cole , the other three boy ninja attempt to work through a puzzle regarding various technologies they have encountered , including Nindroid s , the Falcon , and the still absent P . I . X . A . L . Unfortunately , after solving the technology puzzle , Nya determines that the hostile force invading Zane ' s systems is attempting to take control of him . The Elemental Masters . The Ninja move on to the next puzzle , which is a riddle surrounded by the symbols of the Elemental Masters . Beasts and Dragons . As Cole continues to deal with the mysterious attacking monster , which has destroyed one of the cave ' s power generators , the other ninja continue their attempts to solve the Ninjigma . The subject of their attacker prompts consideration of the various creatures they have encountered , while Cole determines that the beast has electrical powers . Eventually the beast destroys another generator , but Cole is able to stop it with a cave in . However , Zane ' s body then awakens with glowing red eyes and a strange voice and menaces Nya . Rise of Garmadon . The Ninja succeed in briefly freeing Zane from the virus ' influence , allowing them to continue working at the Ninjigma puzzle in an effort to save him . The next portion of the Ninjigma proves to involve Garmadon , with different symbols representing aspects of both his Evil Lord and Good Sensei aspects . Eventually , they realize that only one image unites the two sides of Garmadon ' s nature : the image of the Green Ninja , his son Lloyd , which then proves to be the center of the final puzzle . Prophecy of the Green Ninja . The Ninja attempt to decipher a maze of text about the Green Ninja , and find themselves forced to break down walls consisting of their individual elements . Memories of reaching their true potential prove to be the key , and they eventually determine that it will take the entirety of the team to solve the puzzle . This involves Nya digitizing memories of her own moment of true potential , as well as bringing Lloyd ' s mind into the computer as well . Unfortunately , their success unleashes an unexpected horror : it releases the Overlord , who has apparently been imprisoned in Lloyd ' s mind . Greatest Battles . Nya determines that this Overlord Virus is a mere remnant of the Overlord from Zane ' s final battle with him , having been locked away by Zane ' s own security programming only to grow powerful enough to start affecting his systems . However , with the enemy revealed , Nya is able to use the memories of the Ninja and their previous battles to fight against the invader .