The four princesses return to Canterlot for another stand against Felix. While they have the highest levels of magic known to the pony kind, they surely cannot underestimate their opponents power. Seeing as he killed almost every last pony in Equestria, they know he is not an easy person to defeat.
As they entered the castle, they were very confident. Just think about it: Four alicorn princesses against a genocidal killer? They have won against even stronger foes before.
'If only the security cameras were working... We wouldn't have to search for him for long.' Luna whispered to Cadance.
'I know right? He could literally kill us any minute now!'
As they walked to the entrance of another hallway, Celestia saw someone there.
'Target is right there, everypony. Let's end his actions,' She said.
As they flew in and tried to shoot beams and the same time, he turned around and yielded the attack. It didn't last long, though, considering this kind of magic was the most powerful magic in history. He got knocked back into the wall behind him.
'What!? How is this possible!?' Felix yelled.
The four landed back, and all of them had a furious face.
'This ends right here, right now! You have harmed our subjects for long enough! Now, it is time for you to pay for your crime!' Celestia boomed in a loud voice, pulling out her sword. The others also got ready.
Felix gasped. 'Wow, stepping out the big guns, Frisk?' He thought to himself, then turned to the group. 'If you die here, your entire group is finished! Don't you see? You four have the strongest levels of magic, and without you, Frisk can never stop me!'
'We may have other plans, but this is not your matter!' Luna yelled. 'Now brace yourself and get ready to die on our hands!' She flapped her wings up angrily.
He smiled mischievously. 'So be it, then.'
It was a one versus four, but the princesses had magic so strong, enough to overpower Felix. They were winning at first, but Felix started to really get into the action soon after he realized he was losing. However, the pony side still kept on pushing forward.
Back at Twilight's castle, Frisk and the remaining people are watching as this fight went on.
'Yes! We're winning!' Stacy gasped.
'Woo! Go, princesses! Beat him up!!!' Mark was so excited he almost cursed.
Frisk was very pleased. 'This is perfect... Totally perfect! Will it end right here?'
'Maybe it will, maybe we don't have to deploy our third round!' Dan exclaimed excitedly.
'Yeah, I am really scared to go up there and face him,' Joesph shivered.
Felix was losing big time. He underestimated their power, he didn't think alicorn magic was this strong.
'No! It can't possibly be!' He cried.
Flurry was wrecking him to bits. 'It's no use, just give up!'
She threw him high into the air, Cadance responded quickly and shot him with magic. Luna then waved her sword at him to send him flying. Lastly, to finish that combo attack off, Celestia used magic and crushed him hard on the ground. And now: The finishing blow.
'Kill him!' Celestia commanded, and everypony shot their laser at once, incinerating the cruel killer's heart. Suddenly, he seemed to regain some kind of consciousness.
'No! You misunderstood me! I didn't mean to do this!' He shouted. But before he could say what he really wanted to say, he was already killed.
Landing back on the ground, everyone, including the ones watching, were waiting to see if he was actually done for.
'Is he killed? Is it over?' Twilight asked Celestia through the communication device.
She was waiting for the smoke to clear up before confirming. When it cleared, she saw a corpse, unconscious. Then, she knew he was finally banished from this world.
'I think that... Judging by what I see...' She smiled. 'We got him!'
Everyone at the castle was overjoyed and were celebrating. He was finally put off to rest!
'Finally, he's gone!' Jessica exclaimed.
'Haha, yes! They did it!' Nathan was on cloud nine.
As Celestia confirmed Felix was dead, the other princesses were very proud and glad.
'Yes! Finally!' Flurry said happily. 'Bring it in everypony, we deserved this win!'
The four had a very warm and cheerful embrace, and they were all very glad he was finally gone.
'It's over... At long last!' Cadance exclaimed.
'I can't believe we actually did it... This is an amazing comeback!' Even Celestia was proud.
However, what was about to happen, meant they were celebrating too soon. Luna saw it at the corner of her eye.
'Wait wait wait! Everypony! Stop stop stop!' She boomed into the device. 'Is that... supposed to happen?'
The corpse started levitating in mid-air and seemed to be sucking dark magic around it.
'Oh my goodness, not again! This is what happened last time!' Flurry cried.
As more and more magic was sucked toward it, they soon realized where the source was. They realize it because Felix's voice was ringing in their ears.
'With all the souls I have collected... It will make me immortal, and mark my words... I will have the last laugh!'
The magic was all released at once, and Felix immediately transformed into his stronger form. Demonic eyes, deadly swords, draconic armor, and his skin was dark red, the color of what he loves most: Blood.
'(Laughs) Don't you understand? I am the god of this world... It's kill or be killed! And everyone will die before me!!!!' He laughed.
Cadance was scared. 'We better run...'
Luna thought for a second and felt the same. 'What are we waiting for!? Go!'
As soon they tried to run out from the entrance, Felix blocked it off quickly, and grabbed them with magic.
'Now to really have some fun...' He giggled evilly.
Suddenly, he started to seemingly change the direction of gravity, leaving the four slamming back and forth into each other and the walls. Then, he kept on using magic to stun them. When they were all timed correctly in a straight line as they were flying across the hallway, he charged up another attack.
'Ahahahahahahaha, you're finished!' He yelled, firing his huge laser, demolishing the four.
In only a second, all four cameras of the four princesses were fried.
Twilight gasped in horror. 'No no no no no no no!!!! Celestia! Luna! Respond to me!' She was crying after she heard no response.
'Flurry Heart? Cadance? Are you there?' Nathan cried.
'Error: Unable to detect cameras. Searching... Error: Target not found.' The program confirmed their deaths.
Mark was furious. 'Is he insane!? How did he just revive from death!?'
'He's crazy! He's not a human!' Jessica cried.
Asriel was getting worried. 'Will we actually lose?'
'No, we won't lose.' Frisk said confidently. 'Although he is now immortal, we have no choice but to show mercy.'
'What!? Are you going nuts!?' He screamed at his sister.
Twilight calmed him down. 'Asriel, please... Through my experiences, Frisk... may not be wrong.'
'What!?' Everyone said in surprise.
'Remember this: Friendship always prevails. Also, Frisk and Felix used to be friends. If he is willing to show mercy, we can get the two back together.' She explained.
'But why would he spare us?' Dan asked.
'I heard his voice before he died. He said we misunderstood him. He said he didn't mean to do all of this.' Twilight explained further.
'Could this mean... He is consumed by dark magic?' Frisk asked.
'Very likely.'
Suddenly, the screen was buzzing, and the next thing that was shown was the face of the convict.
'Guys, look!' Stacy said, pointing to the control panel screen.
Felix managed to control the camera of the system, and he now finally shows himself to the rest of the group.
'Ah, hello my friends! Having a sweet time cause you thought I am dead? Well, it sucks to be you, I killed them all!' He laughed.
'You'll be punished badly for this!' Joseph proclaimed.
'Oh, you're all stupid people... I will kill you guys before you can even do that!'
Frisk stepped up. 'Felix... What happened to you?'
He gasped for a bit. 'Oh, it's you, Frisk. You know who I am, don't you? It's been a long time... How have you been? I've been really busy being shadowed by your spotlight recently!'
'Listen, I understand you, my friend. Please show mercy to me.'
'No, never!' He shouted. 'I will never do that! I am going to have my revenge on you for killing my innocent father!'
Twilight gasped. 'Wait... What? Gromiz was innocent!?'
'And I see that you made a bunch of new friends... You've forgotten about me all along, haven't you!? After all these years, my dreams have been shattered by you...' Felix was faking that he didn't mean to do all of this.
'Felix... Please, listen to me...'
'No way! In fact, I have a plan...' He yelled. 'Meet me at the castle of the two sisters, don't upset me!'
As soon he finished, the camera went off.
'Wh-What does that mean?' Jessica asked.
Frisk sighed. 'There is only one way left to end this... You know what to do.'
'You mean... we're up next?' Dan was shivering.
Mark nodded. 'There's no turning back now... We must prepare ourselves for round three.'
'You're right, even though he is immortal, we'll have to try.' Stacy said.
Twilight had an idea. 'Maybe if he shows mercy... Or if we convince him enough, we may be able to lure him into getting himself killed. I just hope we will be victorious...'
Joseph was getting ready. 'Come on everyone, let's go!'
As everyone got ready and were about to leave, Frisk had a different idea.
'Someone has to stay behind,' she said.
Asriel was shocked. 'Aren't you coming, sister?'
'If I go, and I die, my friend will be alone all by herself. She doesn't deserve this, after what happened last time. I won't make that mistake again.' She smiled.
Twilight gasped. 'Frisk... You're such a wonderful and loyal friend...' She was crying a bit and hugged her friend.
'Don't worry guys, we'll be okay. Just... Do what you have to do.' Frisk told them kindly.
The loved ones of the two were both crying to see them staying.
'Twilly... I won't stop you, but... I can't leave you here...' Nathan cried.
Asriel kept stuttering because of the tears. '(Sobs) Frisk... (sobs) My sister... I love you so much...'
Both couples hugged each other tightly, both crying.
'I love you too, Asriel. I've always loved you. But this time, I must leave you to do this task. Please, just go. I promise you, if you die, I will avenge you.' Frisk said to him.
'Okay... I will do it for you... I will do my best to stop him, much better than I have ever fought.' He said confidently, finally letting go of his sister.
On the other side, though, the two were still crying.
'No... I can't leave you down here if I die!' cried Nathan.
Twilight dried her tears. 'I've been waiting for this day to come for a long time... I know we made that promise, but I'm afraid it must be broken. If we follow you, and we die, ponykind will be eradicated from history. I never expected all of this. Please forgive me, and... You'll do a great job, okay?'
The two had one last kiss before they let go. They knew they may not see each other again.
'I love you, Twilight Sparkle...'
She smiled, and let go. 'And I feel the same way, Nathan.'
The other five came to hug the two as well, taking turns to say their last goodbye.
'If you have to fight him... Good luck to you,' Mark said.
'You too, I hope you guys succeed,' Frisk replied.
'We'll always remember the bittersweet memories we had together,' Jessica smiled.
'Friendship really does last throughout the ages, doesn't it?'
'You're going to be okay, we will help you stop him,' Dan patted Twilight's head.
'I hope you guys can do it,' She said.
'You both changed our lives, we couldn't thank you enough. Now, it's time we repay you,' said Joseph.
'We love you both, and we love all the ponies,' Stacy added.
The two smiled. 'You're very welcome.'
Finally, the seven humans set out for what's possibly the final quest of their lives. They don't know how strong he really is, but they all hoped at least one of them makes it back safe and sound. The two opened the castle doors, and they marched towards the old castle.
Nathan kissed Twilight again before he went out. 'Goodbye, my sweet girl.'
'(Giggles) You'll be a hero, you know that?' She smiled.
Asriel did the same with Frisk. 'It's all come down to this. Just remember, I will always love you, Frisk.'
'Do you promise me? Because I will.' She giggled.
'Cross my heart and hope to fly, stick a cupcake in my eye,' He promised.
And so, the castle doors are shut, and they saw those humans for possibly the last time.
Twilight sighed. 'Do you think they will be okay? He killed every single other pony that lived in this world...'
'Only one way to find out.' Frisk replied. 'However, if they fail... It's just you and me, Twilly. Just like old times. Fighting together again.' She added as she pulled her close.