The YED leads Sam outside, in Sam's dream.

"You're awfully quiet, Sam. You're not mad at me, are you?" YED Says

"I'm gonna tear you to shreds, I swear to—" Sam Says

"When you wake up, tiger, you give it your best shot." YED Says

"Where's my brother?" Sam Asks

"Quit worrying about Dean. I'd worry more about yourself." YED Says

"Why? You gonna kill me?" Sam Asks

"I'm trying to help you. That's why we're talking. You're the one I'm rooting for." YED Says

"What's that supposed to mean?" Sam Says

"Welcome to the Miss America pageant. Why do you think you're here? This is a competition. Only one of you crazy kids is gonna make it out of here alive." YED Says

"I thought we were supposed to be—" Sam Says

"Soldiers in a coming war? That's true. You are. But here's the thing: I don't need soldiers. I need soldier. I just need the one." YED Says

"Why?" Sam Asks

"Well, I couldn't just come out and say that, could I, Sam? I had to let everyone think they had a fighting chance. But what I need ... is a leader." YED Says

"To lead who?" Sam Says

"Oh, I've already got my army. Or, I will soon, anyway." YED Says

"You son of a bitch." Sam Says

"Honestly, I'm surprised you hadn't guessed. I mean, why do you think so many children flamed out already? Max Miller and Andy's brother, what's-his-name? They weren't strong enough. I'm looking for the best and brightest of your generation." YED Says

"My generation?" Sam Says

"Well, there's other generations, but let's just worry about yours. That's why I'm here, Sam. I wanna give you the inside track. You're tough. You're smart. You're well-trained, thanks to your daddy. Sam – Sammy – you're my favorite." YED Says

"You ruined my life. You killed everyone I love." Sam Says

"The cost of doing business, I'm afraid. I mean, sweet little Jessica – she just had to die. You were all set to marry that little blonde thing, become a tax lawyer with two kids, a beer gut, and a little McMansion in the suburbs. I needed you sharp, on the road, honing your skills. Your gifts." YED Says

"What about my mom?" Sam Asks

"That was bad luck." YED Says

"Bad luck?" Sam Says

"She walked in on us. Wrong place, wrong time." YED Says

"What does that mean?" Sam Asks

"It wasn't about her. It was about you. It's always been about you." YED Says

"What?" Sam Says

"Well...okay. You caught me in a charitable mood. I'll show you." YED Says As The demon snaps his fingers, and he and Sam are suddenly in Sam nursery, back on the night Mary died.

"Look familiar? It should." YED Says
As Sam watches his six-month-old self crying in his crib, while the Yellow-Eyed Demon from the past stands over him all those years ago.

"Relax, Sam, this is just a hi-def instant replay. Enjoy the show." YED Says

Mary Winchester enters the room, looking tired.

"John?" Mary Says

"Mom!" Sam Says

"Is he hungry?" Mary Asks

"Shh." Past YED says

"Okay." Mary Says As leaves

"Wait, Mom. Mom!" Sam Says

"What did I just tell you, Sam? She can't hear you. This isn't real." YED Says

They watch as the Past YED slices his own wrist with his nail. He drips some of the blood onto Baby Sam's mouth.

"What the hell are you doing to me?" Sam Asks

"Better than mother's milk." YED Says

"Does this mean I have demon blood in me? The demon chuckles, Answer me!" Sam Says

Mary suddenly rushes back into the room. The Past YED turns to her, revealing his colored eyes.

"It's you." Mary Says

"She knew you." Sam Asks

Mary begins to walk closer, but the Past YED forces her against the wall. They watch as she slowly moves up the wall, until she is pinned to the ceiling.

"No!, Mary continues her slide upward, No!" Sam Says

"I don't think you wanna see the rest of this." YED Says As He snaps his fingers again. Sam jolts awake in the abandoned South Dakota house.

"Sam, wake up! Ava's missing." Jake Says

Jake and Sam go outside.I'll take the barn and the hotel. You take the houses.

"All right. Meet back here in ten minutes, okay?" Sam Says

"Okay." Jake Says As Sam begins his walk to the houses. Ava peeks her head out from around the corner, but Sam doesn't see her

Meanwhile, Andy has stayed back at the abandoned building. When he turns, Ava is standing in the room with him. She drags her finger along the salt on the windowsill, breaking the line.

"Ava, where'd you go? Didn't you hear us yelling?" Andy Says

"Yeah, I heard you." Ava Says

She stares at him a moment, then puts her hands to her head in concentration. A cloud of black demon smoke appears outside the window. Since the salt line has been broken, it is able to enter the room through the window.

"What are you doing?" Andy Asks

The smoke suddenly materializes into the demonic little girl.

"Holy..." Andy Says

The demon girl knocks him down and wastes no time in killing him. He screams in pain, as his blood splatters everywhere until he is completely dead. Ava watches his corpse for a second, amused, then begins screaming.

Outside, Sam hears Ava screaming and hurries inside. He sees her crying, pointing at Andy's body

"Sam! I just found him like this!" Ava Says

"What happened?" Sam Asks

"I don't know!" Ava Asks

"How'd that thing get in? Where were you?" Sam Asks

"I just went to get some water from the well. I was only gone maybe, like, two minutes!" Ava Says

"You shouldn't have gone outside. Ava, we have to stay in here— Sam notices the salt on the window. Who did that?" Sam Says

"I don't know, maybe Andy—" Ava Says

"Andy wouldn't do that. Ava, that line wasn't broken when I left. Ava." Sam Says

"What? You don't think that I—" Ava Says

"I'll tell you what I think: five months. You're the only one with all that time you can't account for. And that headache you got? Right when the demon got Lily." Sam Says

"What are you trying to say?" Ava Asks

"What happened to you?" Sam Asks

"Nothing!" Ava Says

Sam stares her down until a minute later, she drops the act, and laughs a little.

"Had you going though, didn't I?, wiping her eyes Yeah. I've been here a long time. And not alone, either. People just keep showing up. Children, like us. Batches of three or four at a time." Ava Says

"You killed them? All of them?" Sam Asks

"I'm the undefeated heavyweight champ." Ava Says

"Oh, my God." Sam Says

"Don't think God has much to do with this, Sam." Ava Says

"How could you?" Sam Asks

"I had no choice. It's me or them. After a while, it was easy. It was even kind of fun. I just stopped fighting it." Ava Says

"Fighting what?" Sam Asks

"Who we are, Sam. If you'd just quit your hand-wringing and open yourself up, you have no idea what you can do. The learning curve is so fast, it's crazy, the switches that just flip in your brain. She laughs, I can't believe I started out just having dreams. Do you know what I can do now?" Ava Says

"Control demons." Sam Says

"Ah, you are quick on the draw. She puts her hands to her head, Yeah, I'm sorry, Sam. But, it's over." Ava Says

The cloud of black smoke returns to the window. Just as it is about to enter, Jake comes from behind Ava and twists her neck, killing her instantly. The demonic smoke leaves the window and disappears.

Outside, near the edge of the woods, Bobby, Elena and Dean pull up in the Impala.

"Well, it looks like the rest of the way's on foot." Bobby Says As They open the trunk and grab guns.

"You Sure He's Here?" Dean Asks

"Yeah, I remember this place and plus I used my tracking Spell and Here we are" Elena Says

"Let's go." Dean Says

Back at the building, Sam and Jake leave and head outside.

"I think we can make it out of here now." Sam Says

"But the Acheri demon..." Jake Says

"No, no, no. Ava was summoning it, controlling it. It shouldn't come back now that she's dead. We gotta go." Sam Says

"Not "we", Sam. Only one of us is getting out of here. I, I'm sorry." Jake Says

"What?" Sam Says

"I had a vision. That Yellow-Eyed Demon or whatever it was, he talked to me. He told me how it was." Jake Says

"No, Jake, listen. You can't listen to him." Sam Says

"S-Sam, he's not letting us go. Only one. Now, if we don't play along, he'll kill us both. Now, I-I like you, man. I do. But do the math here. What good's it do for both of us to die? Now, I can get out of here. I get close to the demon, I can kill the bastard." Jake Says

"You come with me, we can kill him together." Sam Says

"How do I know you won't turn on me?" Jake Says

"I won't." Sam Says

"I don't know that." Jake Says

"Okay, look." Sam Says As He takes out his knife, shows it to Jake, and places it on the ground.

"Just come with me, Jake. Don't do this. Don't play into what it wants." Sam Says

After a pause, Jake places his weapon on the ground as well. Sam looks very relieved.

"Okay." Sam Says

Suddenly, Jake punches him. With his super-strength, Sam goes flying across the field and crashes onto the ground. Jake approaches, kicking down the fence and leaning over Sam.

Sam is on the ground, winded, and Jake and Sam watch each other as Jake approaches. As Jake suddenly makes a fast approach to kick Sam, Sam kicks out himself; the two exchange blows with Sam on the ground, and then he leverages himself up. Each land multiple blows; one blow hits Sam's right arm and shoulder with a bone-crunching sound, knocking him down again. He gets up quickly although clearly in pain. Jake approaches and swings at Sam, but Sam ducks out of the way and Jake's punch goes through a wooden railing, temporarily holding him. Sam knees him several times, then kicks him down. As Jake lies there, winded, Sam picks up the iron bar that Jake was using and knocks him out. Sam approaches the unconscious Jake, consideringly, and lifts the bar as if to strike – he hesitates a moment, then tosses the bar to the ground.

Just as he tosses it aside, he hears from a distance Dean calling his name.

"Sam!" Dean Says

Sam hears his brother, and turns toward him, still clutching his arm, and nearly staggering with exhaustion. He sees Dean, Elena and Bobby approaching, with flashlights, towards him. They walk toward each other, in the rain.

"Dean!" Sam Says, Jake suddenly wakes up. He grabs the knife that Sam had placed on the ground

"Sam, look out!" Dean Says picking up his pace

Jake stabs the knife right through Sam's back. Dean takes off running for them.

"Noooo!" Dean yells

Jake twists the knife, creating a massive wound, before running away. Sam, gasping, falls to his knees. While Bobby and Elena chases after Jake, Dean slides to the ground in front of Sam. He grabs at Sam's clothing, trying to keep him conscious.

"No, Sam!" Dean Says As Sam falls forward onto Dean's shoulder.

"Whoa, whoa, whoa, Sam. Sam! Hey! Hey, hey. Come here. Let me look at you." Dean Says As He places his hand on the wound in Sam's back, covering his entire palm in blood.

Hey, look at me. It's not even that bad. It's not even that bad, all right? Sammy? Sam!, he is holding Sam, looking at him, and Sam's head is wobbling. Hey, listen to me. We're gonna patch you up, okay? You'll be good as new. Huh? I'm gonna take care of you. I'm gonna take you care of you. I've got you. That's my job, right? Watch out for my pain-in-the-ass little brother? Dean touches his brother's face. Sam? Sam! Sam! Sammy!

Sam's eyes slide shut. His entire body slumps forward.

"No. No, no, no, no, no, no. Oh, God. Oh, God." Dean Says With tears streaming down his face, Dean rocks Sam in his arms as he dies.

"SAM!" Dean Says