Fetching Cody (2005) on Netflix

Plot summary

Art Frankel is a drug-addicted dealer and hustler in Vancouver's Downtown Eastside. He arrives at the apartment of his girlfriend Cody Wesson and finds that she has overdosed on heroin, and she is in the hospital. Art discovers a time machine. He decides to use it to try to save Cody, setting out to rewrite her past in the hope of preventing her death.