
Maggie Fitzgerald, a poor waitress, asks old gym owner Frankie Dunn to train her, but he refuses. Maggie is encouraged to train at his gym by his associate Eddie 'Scrap-Iron' Dupris and eventually convinces Dunn with her determination. Maggie, who has a dysfunctional family, and Dunn, whose daughter is estranged, gradually fill the voids in each other's lives.