"It's useless" Sam cried out as they entered the bunker. "All these leads have been wrong, It's just a bunch of demons." He threw his bag on the table, slumping into one of the chairs.
"Don't lose hope, Sam. We'll find him, it'll be alri-" Mary started but was cut off by Sam standing up quickly.
"No, no it won't! That's the point. You keep saying that but you're just lying to yourself." Sam shouted, throwing his arms up in anger. Sam heard a buzzing and reached for his phone. "Hello? Cas?" He questioned.
"Hello Sam" The voice on the other end of the phone spoke calmly.
"Who's this?" Sam exclaimed.
"I'm the boy who has your angel and if you want to see him again- you know- alive then we should probably chat." The call ended. Sam pushed his phone into his pocket, muttering something under his breath.
"C'mon mom, get the gang we need to leave. Cas is in Danger."
Sam, Mary, Bobby, Jack, and Maggie all sat in the Impala, in a hushed quiet, the atmosphere heavy. When they arrived they went over the plan and Sam walked in.
"Well hello, Sam" His eyes flitted with black. A demon.
"What do you want" Sam spat.
"I want the Crowley deal" he replied.
"We never made a deal with Crowley.
"Well isn't that exciting". He sighed. Sam shifted nervously.
"Give me Cas" he spoke harshly.
"Sam. Oh, Sam. I told you to come alone." Just then, two demons brought in Jack and Maggie.
"Hey are guys okay?" Sam asked, they nodded.
Just then Bobby and Mary broke down the front door and a fight broke out. Mary runs and frees Cas and Jack is getting badly hurt. Everyone is slowly getting defeated. Sam stands up.
"Enough! There'll be no new King of hell. Not today. Not ever." Sam shouted. Everyone froze. Sam's stare was so intense, no one dared to move. "And you wanna know why? Cus you'll have to challenge me."
"Sam, no don't do it" Cas warned, giving him a glare. Sam ignored him, grabbing the main demon. He pulled the demon knife out and cut his neck, draining all the blood from him. He threw the body aside, wiping his mouth.
"Take me down." He spat. With that, the demons left with Sam, leaving a shocked group behind.
Sam walked through the halls, pushing open the doors to the throne room. The demons all came to alert, ready to kill him. Two demons, scurrying behind him stared at them all in warning. A few backed down apart from two brave demons, next to the throne. Sam smirked, nodding at one of the demons behind him. She ran forward and stabbed the demon on the right, as the demon on the left tried to run. Sam grabbed him, stabbing him with the demon blade. He walked to the throne and sat down.
"I'm the new king now." He smirked, an evil look flashing through his eyes.

Backatthebunker-
No one spoke to each other as they all arrived at the bunker. They were all too shocked, in too much pain. Physically and emotionally. Mary's face was stained from crying all the way back.

"We've got to find Dean," Cas spoke quietly and broken. "We've got to get Sam back. We need to find them." Mary poured herself a whiskey in a smallish glass, downing it in one and refilling it. She turned to face Cas with a sympathetic look at her face.
"Cas...you need to rest. It's been a long day, we all need to rest." Mary sighed, sitting down. "We'll start looking tomorrow. I promise." Mary rested her head on her hand. "We just need to rest." With that everyone walked off in different directions except Bobby who, also pouring himself some whiskey, sat down next to Mary.
"You need to rest too y'know. Possibly you more than anyone." Bobby told her. "Now go get some rest. I'll be up for a bit anyway. There's something I need to do." Bobby sighed and Mary stood up, wandering off. Bobby sat for a while going through his phone. Cas appeared behind him.
"Hey, Bobby. Shouldn't you be resting?" He questioned.
"Shouldn't you?" Bobby retorted. "I'm fine just taking care of something."
"I just need to talk to someone. I'll be back in a couple of hours" Cas said walking out.
Hell
Sam sat bored, as demons talked at him about deals. "I want a hellhound. You. Get me a hound." He spoke suddenly, his voice gruff.
"But sir-"
"No! I want two. Get them me now otherwise" he stretched his hand out a closed his fist, the demon started choking. He released him. "Go. Now!" He shouted as the demon ran off. Sam stood up, grabbing one of the demons. "Go bottle up some demon blood" he spat, throwing him on the ground. "Take him" he pointed to the other side of the room. The demon ran off dragging the other demon with him.
A few hours later a demon cane in looking scared, holding two large hellhounds. Sam smirked as the demon walked them up to him. They sat by his side and he pet them.
Cas
Cas walked through a deserted street until he got to an empty park. Two people emerged from the slide and started walking towards Cas, they looked him up and down.
"What do you want Castiel?" One of them asked.
"I need to talk to Gabriel" he spoke bluntly with urgency. "It's about the king of hell."
"Who. Crowley? He died. You gotta try better than that Castiel." The second one laughed.
"Not Crowley. The current king of hell, I'm sure Gabriel will be interested in who it is. Trust me" The angels nodded and let him up.
Heaven
Cas arrived in heaven and pushed open the large door to the offices. Everyone spared him a look before continuing what they were doing. He knocked on Gabriel's door.
"Gabriel? I need to speak with you. It's urgent" Cas shouted. The door swung open to reveal Gabe sitting on a large chair with a smirk.
"Hey, baby bro. What's up?" He smiled. Cas stayed serious.
"This is no joke, Gabe. There's a new king of hell" he stood in front of Gabe as he stood up.
"So who's the new guy. I can take him" Gabe smirked.
"It's Sam Winchester" Cas replied as Gabe's face dropped.
"Take a seat," he said solemnly.