Do they surrender or try and fight?

Joe Surrenders to the Inevitable.

Heather grinded her pussy against Karl's crotch, the cock filling her with each thrust. She licked her lips as she looked at Bob and Joe, who despite themselves were getting erect at the sight of the Succubus getting fucked by their friend. Kyle gripped Heather's hips, pulling her down a bit more so more of his cock would slide into her pussy, and she let out a scream of pleasure.

"Fuck, you're so fucking hot!" Kyle said as he thrust into her down to the hilt.

Joe unclasped his pants and dropped them with his underwear. He looked at Bob and shrugged as he walked up to Heather, she leaned forward and wrapped her lips around Joe's cock while she rode Kyle's cock. She took it into her mouth and began to suck at his cock, her serpentine tongue wrapping around it and slipping out occasionally to lick his balls.

"Fuck... that feels so good..."Joe moaned, Kyle's skin was already starting to turn red and Heather looked over at Bob. "You gotta try this..."

Bob watched his friends descend into sexual depravity. He watched Heather's massive tits bounce up and down as she fucked Kyle. He was having a hard time resisting the urge, and he knew that there were more demons in the building... but he could run. All he had to do was surrender and drop his pants.