 Sam and Dean investigate a string of bank robberies that have only one thing in common, those who committed the robberies are were dead for a week at the time. With most of the leg-work done by conspiracy theorist Ron who suspects it s the work of a "Mandroid", Dean and Sam quickly realize they are dealing with another Shapeshifter. When the Winchesters surveil the next target they find the shapeshifter present and intend to handle things. However Ron comes in with a cache of guns and takes the bank hostage with the intention of smoking out the "Mandroid".