Michael obtains some caustic chemicals to use in his escape plan, while his psychotic new cellmate Haywire develops an uncomfortable fascination with his tattoos. Unaware that she is being monitored by shady Secret Service agents, Veronica enlists further legal help in her investigation.
Kellerman and Hale blackmail Warden Pope, Michael finds out he might get out earlier than anticipated, and Veronica becomes uncertain of her allies.
T-Bag loses one slave and targets another, Kellerman and Hale continue to follow LJ who tries to contact Veronica for help, and Abruzzi's inability to meet the gangsters' demands jeopardises the escape.
Michael, Lincoln and the inmates risk life and limb, the Vice President fears she will lose her command if not her life, and Veronica tracks down the most significant piece of evidence to prove Lincoln's innocence.
Sara considers whether she should help Michael with his plan, Michael betrays Warden Pope, and Veronica finds evidence that points her to Montana, but realises that her closest ally may actually be her greatest enemy.