Dungeons and Chains

After finding a clearly confused and not fully with it Sam chained in their new dungeon, Dean soon begins to learn why his brother's scared of the chains and also why Sam's so determined to stay chained up as something from Sam's year alone returns to try to claim him no matter who has to die. *Limp/ groggy/in shock/hurt!Sam & Over-protective/angry/worried!Dean. (OOC Amelia too)*