Mike is an ordinary man who, finding life and failure too difficult to handle, has slipped into alcoholism and finally homelessness. Then one day, amongst Christmas shoppers and revellers, he sees Salvation Army Captain Annie Walsh. He lurches across the street towards her, and into the path of a bus... Annie runs to his side and comforts him; a crowd assembles, and an ambulance is called. Miraculously, Mike recovers from the injuries sustained in the accident, but has no memory of who he is. One day, he turns up on the doorstep of the detox centre that Annie runs and she takes him in, despite the reservations of her superior and fiancé, Major Hurst. Seeing in Annie his last chance to live and love, Mike decides he must go through the agony of detoxification to make himself worthy of her.