Based on the lives of June and Jennifer Gibbons, real-life identical twins who grew up in Wales and became known as "the silent twins" because of their refusal to communicate with anyone but each other.

A physically perfect but innocent man goes in search of his long-lost twin brother, who is short, a womanizer, and small-time crook.

Having both coincidentally cheated death on the same day, estranged twins reunite with the possibility of mending their relationship.