Michael Scofield is imprisoned in Fox River State Penitentiary. He finds his brother, Lincoln Burrows, who is a death row prisoner, and tells him that he is going to break them both out of the prison.

Trouble is inevitable in the prison, with a race riot imminent. Michael has problems retrieving a screw from the bleachers. Veronica receives a security tape that shows Lincoln shooting Terrence Steadman.

Two steps forward and one step back. Michael gets Abruzzi on his side and proves Sucre's trustworthiness, but then loses a valuable piece of his plan.

Michael gets more of the tools and people he needs, but someone very high up has taken notice and started wondering what he's up to.

Michael gains a necessary piece of information to effect his escape, but can he keep the Warden from kicking him out?

Veronica, Nick and LJ must go into hiding, while Bellick unwittingly provides Westmoreland's motivation to aid the escape.

With Abruzzi becoming more desperate to regain authority within the prison, it seems that Fibonacci's number is up.

Michael hands over an address to Falzone, allowing work to resume on the tunnel. Meanwhile, the VP enlists the help of a dangerous specialist.

C-Note overhears Michael and Lincoln discussing that there are too many fugitives for available time and they share the information with the group telling that one shall be left behind. T-Bag feels threatened and calls his cousin James Bagwell, disclosing the escape plan and asking James to call the Warden Pope in case T-Bag does not contact him later. Abruzzi asks his outside man to kidnap James, but things go wrong and the mobster kills James and his five year old son Jimmy. Abruzzi feels guilty for the death of the child and feels the need of God's forgiveness, but T-Bag betrays Abruzzi like Judas. Meanwhile Veronica and LJ bring Nick to the hospital and while in surgery, LJ escapes to see the funeral of his mother. Daniel Hale sees the teenager in the cemetery but he does not arrest him; later he tells his wife that they should move West and makes an anonymous call to Veronica scheduling a meeting in the Highland Cafe. Maricruz tells Sucre that she is pregnant but she will marry Hector. Captain Bellick presses David to rat Michael, reporting everything he says. Michael tests the escape plan and informs the group that they are ready to go that night, but Lincoln was sent to solitary confinement protecting his brother.

The escape is about to go through when the team hits a stainless steel snag, while Veronica is just a moment too late to get all the information she needs to prove Lincoln's innocence.

With the pipe to the infirmary replaced and Lincoln's life hanging in the balance, Michael must rethink his plan to escape and save his brother's life. A fellow inmate may hold the key to preventing Lincoln's execution.

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?

Having burned his shoulder, Michael's tattoo that showed the path through psych ward is now incomplete. With another inmate intimidated into snitching about the escape plans, Michael Scofield must use his wits to find a new way out of Fox River.

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.

Westmoreland uses Bellick to plug a hole in the escape plan, which forces Michael to move up the breakout timetable. A fearful Tweener pledges his loyalty to Michael and in return may get out of jail for free; Michael feels that he has no choice but to involve Sara in the plan and must betray his father figure; and Veronica finds her life in jeopardy from her closest ally, who has a surprising connection to a Fox River inmate.

The team start the escape from the hole in Scofield's cell.

As the escape continues, lives are lost and Pope and Bellick do everything in their power to capture the convicts.

Linc and Michael have decided to take the keys and escape, figuring at least they'll go down fighting. FBI Special Agent Alexander Mahone chased them while staying in contact with Secret Service Special Agent Paul Kellerman who suddenly shot Mahone and gave the brothers a ride because he wants revenge on the White House; Linc wants his instead, but is offered the location of Terence Steadman. T-bag visits his ex-girlfriend, who tells him the children think he's their Uncle Teddy on an oil rig, but he moves in; when she goes for a gun, he attacks her and her son attacks Zach him, so he turns the home into a private prison. In prison, former boss Bellick, who naively had made a deal in order to do his time in Illinois, shivers in general population among the prisoners he abused and their mates, he has none as the new warden sees him as an example of his new, clean ship; he soon realizes there's no pleasing them, and tries hitting hard; a loyal guard warns him the night shift is on his enemies side as he treated them badly. Benjamin Miles 'C-Note' Franklin tries to save his Kacee who is in custody, advising her to put all the blame on him; after hearing how scared his girl is, he asks one of his friends for help to run while she's on bail but the judge refuses bail. Mahone awakes in hospital, and reports to Kim on Kellerman's betrayal and the brothers' escape, which is hitting the TV news, but refuses to play anymore, even if that means jail; when his wife Pam phones their son is hurt he rushes out for Colorado, but is stopped to hear it's a warning to force him back in line; however he is through doing Kim's bidding and shoots his man. Kim calls Steadman's bodyguards: he must be evacuated to a safe house as Kellerman knows his residence, but he is already there with the brothers- Kims orders to kill everyone, but only the FBI men are shot; Kellerman explains Steadman is made unrecognizable, including plastic surgery, so their only option is to get him to Washington, where FBI agents who know can still make the truth stick. Michael decides instead to turn himself in while informing the press, despite Kellermans gun aimed at him, but Steadman prefers to commit suicide, and his corpse is worthless for the brothers.