Mike hides the mysterious girl in his house. Joyce gets a strange phone call.
Michael tries to retrieve an item from Blanding Botanical Garden in Utah, but Mahone's people got to it first. Mahone believes that someone on his team is leaking information to the press; meanwhile Michael does some research on Mahone at an Internet café, then makes a trip to Durango, Colorado, to see a woman there. Linc and L.J. are on the road in Arizona. C-Note is in Chicago, and Agent Lang tries to use his wife to capture him. Bellick and Geary phone C.O. Patterson, at Fox River, to get information on where they should look for T-Bag. Sara is at a motel in Elgin, Illinois, trying to crack Michael's code. T-Bag arrives in Tribune, Kansas, for (as he puts it) "romance". Kellerman is on the trail of Sara.
At the U.S. Dept. of Energy an unexplained event occurs. Then when a young Dungeons and Dragons playing boy named Will disappears after a night with his friends, his mother Joyce and the town of Hawkins are plunged into darkness.
Michael's plan has hit a snag when the home owner's daughter, a cop, arrives. Mahone argues with Lyle Sands about how to proceed, but ultimately hopes that Tweener, in FBI custody, will reveal the location of the other escapees. Sara is now suspicious of Kellerman, so he tries something different to find Lincoln Burrows. In an Arizona detention facility, L.J. finds out he's to be released the next day; Linc drives to get him. Haywire, in Wisconsin, steals supplies from a camping shop.
Mahone arrives in Salt Lake City, trying to locate exactly where in Utah the escapees are. Michael and Linc hatch a plan with T-Bag and Tweener that will enable them to dig in the right place. C-Note and Sucre meet on the highway and head toward Tooele. Kellerman, in Washington, D.C., briefs Kim. Governor Tancredi phones Sara with a warning.
Michael and Linc arrive in Tooele, but the map they need to locate the double-K ranch is missing. They run into T-Bag and Tweener, who have also come to Tooele for Westmoreland's money. Meanwhile, C-Note makes his way by train toward Tooele. Sucre reaches Las Vegas and attempts to halt the wedding of Maricruz and Hector. Sara invites Kellerman to her apartment, believing he is harmless. At the FBI office in Chicago, Mahone reviews files recovered from Michael's hard drive, and begins to piece things together.