Previously fired from his job as manager of "Emerald City," the experimental unit set up at Oswald Correctional Facility, Tim McManus (Terry Kinney) has been reinstated by the time Oz's fifth season gets under way. The season begins with an accounting of the damage caused by the gas explosion at the end of season four. Not long afterward, "Emerald City" has new facilities, and a whole new crop of inmates -- all from solitary, having been relocated due to ventilation problems. In another development, a bus accident kills the relatives of several Emerald City inmates; among those devastated by the loss is wheelchair-bound Augustus Hill (Harold Perrineau Jr.), who makes a dangerous choice when he tries to console himself. Elsewhere, convict Miguel Alvarez (Kirk Acevedo) puts his life on the line to reassert his control over the prisoners; inmate Rebadow (George Morfogen) is cheated out of a two-million-dollar lottery prize; and the prisoners put on a variety show. Season five ends with an overabundance of cliffhanger situations involving (among other things) a comatose convict and a capital murder conviction. There is also a devastating loss at season's end -- even more devastating than the one incurred at the outset of the season.
by Rovi synopsis