 Frank Grimes ' favorite television series , Dishonorable Discharge , ends after six seasons and it is revealed that the entire series was just an angel 's dream . Grimes is outraged and determined to change the ending . Later , Mark Lilly tells his girlfriend , the half @-@ demon Callie Maggotbone , that he has not seen his father since his sixth birthday . Mark 's roommate , the zombie Randall , is touched by this and decides to document Mark 's journey to find his father , so that he can become a Hollywood director . Mark is assigned by Twayne Boneraper to investigate Grimes , who has been busting people who enjoyed the ending of Dishonorable Discharge . He and Randall ( who documents everything with his video camera ) ride along with Grimes . In a memory sequence of Grimes ' , it is revealed that he was a real cop in the 1970s and worked with an undercover expert named Jimmy . He was dishonorably discharged from the force and repressed all of his memories of being a cop . Mark figures that this is why he is so angry with the ending of the series , and takes him through his past by using the same car Grimes and his partner Jimmy had . In the car , Grimes has a memory sequence again and drives to Hollywood . 
