No one expects much from Christy Brown, a boy with cerebral palsy born into a working-class Irish family. Though Christy is a spastic quadriplegic and essentially paralyzed, a miraculous event occurs when, at the age of 5, he demonstrates control of his left foot by using chalk to scrawl a word on the floor. With the help of his steely mother — and no shortage of grit and determination — Christy overcomes his infirmity to become a painter, poet and author.

When a courier at the D-Day Courier Service mistakenly finds a pile of money in his regular delivery, he does some digging only to discover that the messenger company is a front for a drug ring. A reformed drug user himself, he sets out to crack the lethal ring.