A brutal mugging leaves Grey Trace paralyzed in the hospital and his beloved wife dead. A billionaire inventor soon offers Trace a cure — an artificial intelligence implant called STEM that will enhance his body. Now able to walk, Grey finds that he also has superhuman strength and agility — skills he uses to seek revenge against the thugs who destroyed his life.

In Sydney, Tracey Heart is a thirty-two years old manager of a video shop ex-addicted in heroin and clean for four years. She is trying to raise forty thousand dollars to buy a shop for computer games on the next door of the rental and become partner of her boss, but based on her negative records, the banks deny the loan. Tracey takes care of her junkie stepfather Lionel Dawson, unsuccessfully trying to make him quit his heroin habit. When her former boy-friend Jonny returns from Vancouver, Tracey's mother Janelle fears a fall of Tracey, while she blames Jonny for the car accident where her son Ray lost one leg. When Ray and Jonny associate to Moss, the assistant of the retired criminal boss Bradley 'The Jockey' Thompson, in drug dealing, Tracey is convinced by Jonny to join them and raise the necessary money for her business along the weekend. Written by Claudio Carvalho, Rio de Janeiro, Brazil