Michael races to find a hidden Whistler before Mahone; searching for clues outside the prison, Lincoln runs into an old friend and makes a new one; T-Bag slithers his way into Lechero's graces as the prisoners threaten a revolt due to the lack of agua (water).

After his failed attempt to rescue LJ and Sara, Lincoln receives a deadly warning from The Company; Michael formulates an electrifying escape plan from Sona; Mahone is haunted by a face from the past; and T-Bag crawls up the ladder as Bellick lands in hot water with Lechero.