No Mercy
After Franz said this to Jeremy, he still remains quiet with that cold-blooded look on his face and the scene then changes to Team Lyoko and Team Xana fighting. They continue battling for a while, but Team Xana knocks Team Lyoko out cold (unconscious). But an exception being Aelita who is out of strength and is watching in horror as Team Xana is about to finish off the unconscious gang (kill them).
(NOTE: it is revealed in the episode "A Bad Turn" that virtual things as real world things in this case, the materialized Krab did not get dematerialized when Ulrich attacked it. Instead, it got killed just like any other real world thing. Therefore, this is the same for Team Lyoko meaning that they will be killed and not dematerialized).
But before Team Xana delivers the final blow, there is a huge flash of white light which makes Team Xana (including Xana William) all look up immediately in shock as they notice Aelita with all her strength replenished and is slowly walking forward with white shining electric orbs in her hands which have white electricity around them. Then her eyes are shown which have white Xana symbols in them (indicating that she is possessed by Franz Hopper) and the look of her face as well who looks extremely pscyho and enraged (due to Franz Hopper's righteous rage). But not only that, the entire pitch black sky has white lightning rapidly occurring.
Team Xana (and even Xana William himself) look somewhat scared. But Xana William orders Team Xana to attack and they start to attack possessed Aelita and they start to battle (in an environment that is pure white near possessed Aelita due to her immense power). But possessed Aelita takes care of them easily without a single scratch as she performs some extremely advanced and powerful aerial techniques (due to her angel wings) with her new white lightning orbs that are undoubtedly powerful (including her hand to hand combat) which knocks Team Xana out cold.
Now as Team Xana falls to the ground unconscious, the scene changes to some chopped up Creepers falling to the ground as Cyber Jeremy destroys the Creepers with his extremely powerful cybernetic ray device that shoots extremely powerful green electric cybernetic rays (just one green electric cybernetic ray is so powerful that it will actually shatter through pedestals in Sector 5 and destroy multiple Creepers with just one shot which has an extremely powerful impact).
Cyber Jeremy then progresses through Sector 5 by shattering through the pedestals blocking the key with his cybernetic ray device (not to mention, his other technique of unleashing very powerful brain waves from his cyber helmet which are also capable of shattering the walls/pedestals of Sector 5, but still not as penetrating as his electric green cybernetic rays. How Cyber Jeremy would unleash these brain waves is that he would put both hands on his head and close his eyes which would unleash these cybernetic brain waves).
After the pedestals have been completely demolished and the key revealed dead ahead, the scene goes back to possessed Aelita who now slowly walks up to Xana William with a totally psychotic look on her face. And noticing that his loyal minions are now defeated and lay unconscious on the ground, Xana William looks very surprised and sort of backs away from possessed Aelita who slowly approaches him.
As a close up of Xana William is shown with a surprised look and slowly backing away, the scene changes back to Cyber Jeremy who now presses the key and proceeds to the elevator. And when the elevator comes up, Cyber Jeremy performs an extremely cool jump to get on it.
While the elevator is shown going very fast with Cyber Jeremy on it, the scene goes back to possessed Aelita and Xana William who now start to battle. Their battle is very intense as they both perform extremely advanced techniques and maneuvars. But Xana William ends up being overtaken by possessed Aelita as Xana William ends up firing one of his own purple electric energy blasts against possessed Aelita's. But possessed Aelita's white lightning orbs outmatch Xana William's and Xana William gets blasted and falls to the ground. After which, possessed Aelita slowly walks up to Xana William again and this time lifts him up by his throat and chokes him for a while and then throws him straight ahead and now walks towards him with her shining white electric orbs again.
As possessed Aelita is shown walking forward with that hardcore enraged look again, the scene changes to Cyber Jeremy who has now approached the celestial dome and has that awesome cold-blooded look on his face the moment he enters the celestial dome. And as Cyber Jeremy is standing still, Franz speaks to him saying that Xana is planning on taking over the digital sea anytime soon and that Cyber Jeremy needs to operate the interface in acquiring the rest of the data for Franz Hopper's materialization.
After hearing this, Cyber Jeremy starts operating the interface. And while he is operating it, the scene changes back to possessed Aelita and Xana William with possessed Aelita walking up to Xana William with her orbs and Xana William breathing heavily and begging for mercy. However, possessed Aelita shows Xana William no mercy by continually firing these orbs at him as well as immediately flying towards him and punching and kicking him.
Now as Xana William (completely sapped out of strength) is laying face down on the ground with a hopeless and scared look on his face in a lit up (white) environment due to possessed Aelita's immense power, possessed Aelita aims her hand towards the red eclipse, closes her eyes, and concentrates very hard as she sings a loud note.
Now as possessed Aelita continues to concentrate, Xana William begs possessed Aelita saying "No, not the moon." But after Xana William said this, the scene goes back to the scene with Cyber Jeremy operating the interface. After acquiring all the necessary data, Franz Hopper speaks to him saying that Xana is now taking over the digital sea. But after Franz said that, a very cool silver cybernetic vehicle gets materialized for Cyber Jeremy and Franz says that this is a vehicle that he programmed for Cyber Jeremy which will enable him to go at cyberspeed and that Cyber Jeremy must now quickly use it and overcome Xana's dark essence which is currently taking over the digital sea.
But after Franz explained this, the digital sea is shown turning pitch black (being taken over corrupted). And after the digital sea has been shown turning pitch black, communication between Franz and Cyber Jeremy has been lost and the interface automatically disappears by itself (luckily though, all the necessary data has been acquired). Cyber Jeremy then immediately gets on his new vehicle and goes EXTREMELY fast down to the digital sea.
And as Cyber Jeremy is going downward, the scene changes back to possessed Aelita who is still concentrating her energy towards the red eclipse with her hand aimed towards it while singing a very loud and beautiful note. But while she is concentrating, all is quiet. However, we do hear the twitching of the white Xana symbols in her eyes while she is concentrating.
After possessed Aelita has concentrated for a while, she has managed to create positive energy which overtakes the negative energy that is keeping the moon in front of the sun which results in a HUGE flash of white light (which has heavenly white sparkles) which is positive energy that immediately explodes from the moon and overtakes everything. This is because all the negative energy around has been converted into positive energy which has been immensly amplified (the ultimate negative energy being the moon. And from there, once the negative energy of the moon has been converted into this positive heavenly white sparkling energy, this positive energy has consumed everything else all the other negative energy).
As a result, everything returns back to normal (the moon in front of the sun is gone and all wounds inflicted by Xana's monsters, Xana William, and Team Xana are all gone which results in everyone waking up from their unconsciousness including the unconscious Team Lyoko). In other words, this positive energy is actually healing energy as well. And when this postive energy has consumed everything, Xana William has been overtaken by it which has resulted in the virus that has controlled him this entire time now being gone. And as for Xana William's unconscious minions (Team Xana), when they were overtaken by this positive energy, they have actually disappeared in huge beams of light (just like how a Megatank would disappear if it were to fall into the digital sea in which a huge beam of light would be produced). This is because Team Xana were actually illusions linked to Xana William. Meaning that since Xana William is now gone, his minions have disappeared as well.
After this positive energy has immediately faded away and all the injured students on the ground are healed and are waking up, the scene goes to that one tower in Sector 5 which is white (which was used by Franz Hopper in possessing Aelita) which now deactivates (due to the lost communication, but just at the right time, too) because the scene then goes to possessed Aelita's hand (which is now aimed towards the sun due to the fact that everything is returned back to normal and the moon is now gone). Then the white Xana symbols in possessed Aelita's eyes disappear as a result of the white tower deactivating.