Michael seeks revenge against Whistler and Gretchen and uncovers unbelievable news; Lincoln and Michael are reunited with the gang and get an offer from a Homeland Security agent; Mahone experiences a devastating loss; T-Bag is deserted.
Michael and the team have a day to find the next cardholder or they risk going back to prison; Mahone seeks revenge on Wyatt, who is attempting to get information on Sara's whereabouts; T-Bag finds a new identity and gets a job offer.
Michael and the team tracks a key card holder to a racetrack; Mahone gets caught with something priceless; Wyatt targets Agent Self; T-Bag starts to figure out Whistler's code.
Lincoln and Sucre target Pad Man to obtain the final card key; Gretchen gives Sarah an opportunity to settle the score; Michael and Roland make deals with different devils.
Lincoln and the team go to Las Vegas where Sucre gets an indecent proposal; Sarah finds out about Michael's condition; Roland pushes his luck; T-Bag and Gretchen team up; the secrets in Whistler's bird book are revealed.