Michael's escape plan almost works, but is ruined at the last moment; a new inmate may know something about Whistler's past and T-Bag loses his status with Lechero when he defends Sister Mary Francis.

Michael races to find Whistler before Mahone. Lincoln runs into an old friend and makes a new one. T-Bag slithers his way into Lechero's graces. The prisoners threaten a revolt due to a lack of water.

Determined to speak with Sara, Michael enlists T-Bag's help to get to the only phone in Sona. Lincoln tries a daring rescue. Whistler comes clean to Michael. Bellick makes an enemy while trying to get back on his feet.

Lincoln receives a deadly warning from the Company after his failed attempt to rescue L.J. and Sara. Michael formulates an electrifying escape plan. A face from the past haunts Mahone. T-Bag crawls up the ladder. Bellick lands in hot water with Lechero.

Michael needs to escape from Sona. With Linc preparing things on the outside and Michael working his genius from the inside, everything looks set.

Michael must prove Whistler's innocence of an inmate's murder. Michael demands evidence that Sara is alive. Lincoln and Sofia monitor the guards' morning rituals. Mahone gets an offer that may get him out of Sona.

Still reeling from the death of Sara, Michael Scofield finds himself locked into a fight to the death with Whistler. Unless they can put their escape plan into action first.