Mahone and Kellerman determine to keep Michael and Sarah apart; a father figure helps Lincoln; L.J. meets a long-lost relative; Sucre plans a getaway with Maricruz; T-Bag runs into a familiar face.
Triggers are pulled that strengthen the MC, but also threaten to destroy it.
Magnum and Higgins go under cover as a couple on a romantic bus tour; a love bird on the trip is murdered and evidence is quickly deteriorating in the Hawaiian heat; TC is shaken when he runs into his ex-girlfriend.