Measure of Revenge tells the story of theater actress Lillian Cooper, whose son dies mysteriously. When the death is ruled an accidental overdose, Lillian decides to investigate on her own, allying with her son's drug dealer, Taz. This investigation immerses her in her rock star son's underground world. Along the way, she hallucinates many of the iconic characters she has portrayed, all of whom encourage her to solve the mystery and seek vengeance.