While running for life from a loan shark, Jean-Paul Bouchette leaves a custom-tailored suit in an unlocked Toronto subway locker. An hour later, as Bouchette is killed, a timid clerk named Victor Frankl finds the suit and takes it. No, he doesn't mean to steal it. He just wants to try it on. It's far too big, but his fate's cinched when he begins to wonder: what if he works out and grows till it fits? Grow he does, with astonishing speed until the suit seems custom-made. Now the suit itself seems to dictate the additional changes he makes: he wears his hair longer and grows a mustache, puts new swagger in his walk, makes winning moves on the ladies. Unknown to Victor, he's now a marked man in a game with an old evil that needed a ringer for Jean-Paul Bouchette.