AU wherein John took baby Sammy out of the house first rather than giving him to Dean. Dean was trapped under debris when he was too afraid to run out of the fire alone. John rescued him, but in moving him, he also did his boy some damage. Dean's been in a wheelchair ever since. Doctors don't believe he'll ever walk again. Could be Gen or John/Dean (or even Dean/John/Sam), but regardless I'd like John refusing to leave Dean behind. Bonus if Dean also has burns/scars from the fire.