Saint Christopher depicts the constant struggle between good and evil, with definitive religious implications, embodied in a young man battling his destructive forces in order to fulfill his destiny. Charismatic Christopher Doogan has lead a troubled life. As he returns home from prison hoping to put the pies of his life back together and atone for his past mistakes, he discovers that his destiny is irrevocably intertwined with his reckless past. Refusing to give up Christopher finds strength to move on in unexpected places.

Identical twins are born, one is good and one is evil. They need each-other to exist, but they deeply resent the others existence. They both fall in love with the same woman. A love triangle forms which leads to murder.