"Walk Hard: The Dewey Cox Story" is a parody of epic musical dramas like "Ray" and "Walk the Line." The story starts with Dewey Cox (John C. Reilly) as a young boy, and when a tragic accident occurs, it leaves him saddened but spawns the birth of his career as a musician. His musical style evolves drastically throughout his career, and he struggles with things that most rock stars have to deal with: groupies, infidelity, and drugs. Eventually, Cox meets a Christian singer named Darlene Madison (Jenna Fischer) and they fall for each other. The question is, will she be able to change his wild rock and roll ways?