In an effort to recreate the missing piece of the tattoo, Michael gets transferred to the psych ward, seeking the help of Haywire. T-Bag and C-Note have to join forces.
Lincoln is worried about Michael’s sanity while Michael has trouble remembering some parts of the prison schematics. Sucre has to conceal the hole in the guard’s break room. Warden Pope transfers Michael to solitary after he declines his request.
Flashbacks shed light on the past actions that led to the incarceration of Lincoln, Sucre, T-Bag and C-Note. Basis of Michael’s ingenious break-out plan are revealed. Dr. Tancredi memorizes how she ended up in Fox River State Penitentiary.
As Lincoln is about to be executed, he briefly sees his father in the viewing room. A phone call from judge Kessler delays the execution. After reviewing the newly surfaced evidence, the judge orders the exhumation of Steadman’s body.
Michael creates a new, more dangerous, break-out plan, involving going through the prison yard. An accident puts Michael’s new plan in danger.
Veronica and Nick request a judge to postpone Lincoln’s execution. A C.O. becomes suspicious about a broken door.
With Lincoln’s execution scheduled for the following day, Veronica comes out of hiding to contact him and gains an ally. Kellerman makes the ultimate sacrifice to preserve the conspiracy. Michael looks for a way to get Lincoln out of solitary confinement in time for the escape that evening. The inmates risk everything as they attempt their escape.
Michael sees proof his plan is working, so he begins to overcome the last obstacle. As the escape draws near, the group tries to reduce its number by one and targets T-Bag.
The escapees and Dr. Tancredi are shocked when they learn the identity of Michael’s visitor, who brings with her a very important piece of the escape plan.
Michael is forced to give up Fibonacci’s location to Philly Falzone, and Kellerman and Hale get a little unwanted help to track down LJ who has gone missing. Veronica and Nick uncover evidence against the man Lincoln was convicted of murdering.
Abruzzi’s demotion in the prison hierachy puts the entire escape plan at risk. Michael finds himself in the uneviable position of trying to protect T-Bag’s new “fish” and facing the threat of T-Bag exposing the plan to the guards. The inmates dig themselves into a hole.