Trapped!

You attempt to move the cot, but it wouldn't budge. "Have you tried lifting this or moving this?" you ask.
"It was too heavy," the man explained.
"Well, help me," you tell him.
You both pull with all your strength. At first, the cot didn't move, but eventually, it did, and you look behind it...and gasp in shock, for right before you both is a small trapdoor in the floor. You open it and look inside, but its pitch black dark. "I'll go first," the man offered. "That way, if there's any danger, you can run away before they kill you."