Legend says that if you see your doppelganger (lookalike), you should run away as fast as possible. You and your doppelganger cannot exist in one place at the same time and in a fight - the doppelganger will always win!
After a year of psychotherapy following the death of her child, Gina Crandall (Melissa Gilbert) is at last beginning to find the road to recovery. This is until she sees a small girl who is the exact image of her own dead daughter. Gina's confusion turns to terror when she catches sight of the girl's mother - a mirror image of herself. The fight for sanity is on as Gina starts to learn the terrible truths of her own life.