Michael's plan to escape has failed. While Lincoln is strapped to the electric chair, he sees an oddly familiar face in the crowd. Is there one last hope to save Lincoln's life, or has his journey reached an end?

After the crash Kellerman tries to suffocate Lincoln, but he is saved in the last moment by a stranger. Sucre leaves solitary confinement and Michael tells to his partners that he has completed the map, but he needs the key to the infirmary. Abruzzi is back to Fox River, apparently converted into a religious man. Warden Pope sends Captain Bellick to find Lincoln before notifying the authorities. Nick tries to convince Veronica that they are losing time checking the calls of Quinn's cell phone. Michael kisses Sara and asks her to wait for him. Tweener is in trouble with Avocado and he castrates the abuser. Lincoln sees that the stranger is actually his father, and he explains that he worked for the powerful Company and Lincoln is a victim of a big plot against him. He had leaked information of EcoField and they used Lincoln to force him to show up. Michaels asks for help from Nika. Veronica finds many calls from Montana on Quinn's phone. The Vice-President tells her brother that he is alive just because of her, and he replies that he does not understand how they have not killed her yet. Abruzzi meets T-Bag and asks him to forget everything, and they make a truce. Nika seeks out Sara and tells her about her life and how Michael helped her, but she actually steals Sara's key. A guy sees the Mustang in a junkyard where Aldo and Lincoln are hidden, but Kellerman bugs the conversation and goes to the spot. However, the police arrive and Captain Bellick arrests Lincoln, saving him from Kellerman. Sara seeks her key and recalls her meeting with Nika Volek; she calls maintenance service to replace the lock. Nick works for Abruzzi. Michael invites David and he betrays the plan to Captain Bellick. Lincoln is back to Fox River under 24 hours surveillance.

Captain Bellick tortures T-Bag for the money during which T-Bag swallows the key and Bellick uses dirty tricks to get the key out.Bellick and Mac leave T-Bag on the boundary of the police.Sarah and Michael Scofield meet,but they are constantly chased by Alexander Mahone.Michael gets close to Mahone's helplessness.Meanwhile Lincoln Burrows and LJ are rescued by Lincon's dad but they are still not shielded from the dirty political games. Sucre tries to contact Maricruz but that plan fails because of the state police doing rounds.

In Maljamar, New Mexico, Michael takes what he needs from a sporting-goods store, then has a crisis of conscience. In Tribune, Kansas, T-Bag narrowly escapes the police but has to leave his hand behind. In Trinidad, Colorado, the three Burrowses discuss politics, but face an unexpected threat. In Gila, New Mexico, Kellerman ties up Sara and resolves to get what he needs from her. Mahone meets Kim for the first time. Bellick receives treatment for the blow to his forehead, and interacts with a local police detective.

Picking up from where we left off, Sucre, Michael, Linc, and Aldo are together, with Mahone on their trail. Sara is face-down in the bathtub as Kellerman prepares to dispose of her body. C-Note is in Harvey, North Dakota with Kacee and Dede, who needs her medication. In Tribune, Kansas, Detective Slattery questions Bellick.

Michael, Mahone, Sucre and Lincoln try to get into the house where Scylla is being kept safe. T-Bag and Sancho head to San Diego in the desert.

Michael and the gang pull off the Scylla heist from deep within Company headquarters - but a terrible surprise awaits them.