I have no idea where this came from it just popped up in my head. It's an different version of Let The Good Times Roll. Instead of Dean saying yes to Alternative Universe (AU) Michael, he says yes to our Michael instead. I was hoping for it to be Michael not the AU Michael in the finale but oh well at least I got to see Dean with them wings :D .

Please leave reviews I don't usually write fics like this so I am nervous. If I get positive feedback, I'll continue and see where this goes.

Jack lowers his hand the gold vanishing from his eyes. Shock, betrayal and hurt all over his face. His father Lucifer who he thought he can trust, who he thought changed. It was all a lie. His own father lied to his face. He lied about Maggie, lied about making a deal with AU Michael. He didn't want to run away with Jack to go exploring, he wanted to run because of AU Michael's plan to take over the world.

Jack blinked back the tears that were starting to form. All this time he thought his father cared about him. Jack wanted to believe that what was written in the books about the devil was not true. Now he felt stupid for giving his father a chance.

I crushed her skull with my bare hands. And it was warm and wet, and I liked it.

His father's confession playing over and over in Jack's head. It made the nephilim feel sick.

Lucifer snaps out of his trance and blinks with confusion. Jack looks at his father straight in the eye.

"You're not my father." he says. "You're a monster."

Lucifer stares at him. Taking in what his son said to him. He sighs.

"Come on, man!" he says frustration in his voice.

Jack said nothing. He couldn't forgive his father not after what he did. He didn't see him as a father now. Lucifer was nothing to him now.

Lucifer's face screws up. So many have turned against him and now his son as well. His eyes glow red. His fists clenched. Anger bubbling up inside him. Then, he let out a roar.

The bunker began vibrating like an earthquake. The Winchesters cover their ears while Castiel flinched. Jack continued staring not getting affected by the loudness of the roar.

The shaking stops. Lucifer's eyes return normal. He takes a deep breath to calm himself down.

"Okay. I tried with you. I really tried with you."

"Everything you told me was a lie." Jack says.

"Because I told you what you wanted to hear, man. So what?! I killed the girl! Big deal! She's a ...she's a human! She doesn't matter!"

"So am I!" Jack yells anger now on his face.

"Yeah? And that's your problem. You're too much like your mother."

Cas walks towards them. "Jack"

Jack holds up his hand to stop him. "Stay back. I'll handle him."

Lucifer raises his eyebrow "Will you?" Jack glares at him showing no signs of fear or stepping down. Cas stops but remains worried about the young nephilim. Lucifer sighs "Oh, buddy. We could have been something, you and me. We could have remade the universe. It would've been great. We could've been better gods than Dad. And I really wanted that, pal. I wanted that. But now if I can't have it with you, I... I don't need ya."

Jack couldn't help but feel hurt by those words. Although he didn't want nothing to do with his father, hearing that his own father not needing him it did crush him slightly inside.

Lucifer shrugs.

"I just need your power."

Jack's eyes widen. Suddenly, Lucifer's blade cuts the nephilim's neck. Grace began pouring out leading into the devil's mouth.

"JACK" Dean yells.

"JACK" Cas also yells

Lucifer consumes the grace and swallows. He heals the cut he made. Lucifer started to glow.

AU Michael looks at the devil glowing, becoming stronger.

Now with the nephilim's grace Lucifer is strong enough to end the universe. AU Michael thought.

Blood continued pouring down the archangel's eyes and nose. He knew too well he couldn't fight Lucifer. Not with a damaged vessel and a devil who is now powerful enough to kill him.

Lucifer will definitely have me on his hit list

This is the end, of everything." The archangel spat out.

The Winchesters look at him.

"What do you mean?" Dean asks.

AU Michael looks at the older Winchester. "The devil has won. You can't stop him." he answers.

With the last bit of his strength, AU Michael flaps his wings and vanishes.

Lucifer grabs Jack as the room started to brighten up.

"JACK" Sam yells.

The young Winchester started running towards them. He grabs Jack ready to pull him away but it was too late. Lucifer vanishes taking both Jack and Sam with him.

"SAMMY!"

Dean looks round the room. His brother, Jack they were gone.

"Dean"

Dean looks at his best friend. Shock and confusion on his face.

"What just happened?"

"Lucifer consumed Jack's grace. When an angel or archangel consumes a nephilim's grace, they become powerful very powerful." Cas answers.

"What?"

"Lucifer is stronger than ever. Michael is right we can't stop him."

"But Sammy...Jack can he still..."

"No. Jack is not strong enough to fight him now."

Dean paces up and down.

"What about Michael. Michael beat him. I saw him do it."

"Michael is not strong enough either."

Dean runs a hand down his face. He is panicking.

"There has to be a way to stop him."

Cas sighs sadly.

"There isn't Dean."

Dean stops.

"Sword"

Cas frowns.

"What?"

"Michael's sword. I am the Michael sword."

"Dean"

"With me as a vessel, he will be stronger. There is a chance me and him can beat Lucifer."

"Dean. You are not suggesting what I think you are suggesting are you?"

"Cas I don't have a choice. Lucifer has Sam. He has Jack."

"Dean. Michael cannot be trusted. You seen what he has done in the other world. You have seen what he is like. He tried to kill you."

"Cas. I'm not talking about that Michael."

Cas frowns. After a few moments, his eyes widen with realization.

No

"Dean. No. Not him." Dean nods at him. Cas shakes his head "Dean no we can't that's too much of a risk."

"I know Cas but like I said I don't have a choice."

"Dean we need to think this through."

"We don't have time Cas." He then sighs and gives his friend an apologetic look. "I'm sorry but I have to say yes to Michael."