A young man named Adam (Leigh Whannell) wakes to find himself chained to
a rusty pipe inside a decrepit subterranean chamber. Chained to the
opposite side of the room is another bewildered captive, Dr. Lawrence
Gordon (Cary Elwes). Between them is a dead man lying in a pool of
blood, holding a .38 in his hand. Neither man knows why he has been
abducted; but instructions left on a microcassette, order Dr. Gordon to
kill Adam within eight hours. If he fails to do so, then both men will
die, and Dr. Gordon's wife, Alison (Monica Potter), and his daughter
will be killed. Recalling a recent murder investigation by a police
detective named Tapp (Danny Glover), Dr. Gordon realizes he and Adam are
the next victims of a psychopathic genius known only as "Jigsaw." With
only a few hours left to spare, they must unravel the elaborate puzzle
of their fate in the midst of mounting terror. The killer has provided
them with only a few clues and two handsaws—too weak to break their
steel shackles, but strong enough to cut through flesh and bone...
