In the ocean's depths, Pythor leads the Nindroids in attaching balloons to the Overlord's preserved body, allowing them to raise the Nindroid MechDragon.
With their leader secure, Pythor, General Cryptor, and the Nindroids take off towards the Lost City of Ouroboros.
At the Temple of Light, Lloyd gives up his Golden Power to restore the Ninjas' Elemental Powers. Lloyd asked Aria to as well but Aria refused and ran away.
To Aria her golden powers had meaning to her. Without them she would be lost in the darkness with no light to guide her. Something the ninjas would never understand if she told them.
Later at Borg Tower, Master Wu spots General Cryptor aboard a train heading for Ouroborus. He tries to send Jay and Cole to investigate, but they are fighting over Nya once more at the movie theater.
Wu sends Kai instead, but the Red Ninja has become overconfident with the heroes' previous victory over the Overlord. As a result, he is attacked by Nindroids and Aria, Pythor grabs him, tapes his mouth, and takes him prisoner.
Cole, Jay, Zane, and Lloyd discover the secret of Arcturus and head for Ouroboros. When they arrive, the floor opens, revealing the OverBorg's ultimate creation
Codename: Arcturus-a rocket designed to reach Delta V, the comet that contains the lost Golden Weapons.
The Ninja release Kai and secretly board the rocket, preparing to go to space.