Kiss Kiss Bang Bang is a darkly comic crime thriller following Harry Lockhart, a small-time thief who accidentally lands an acting role in Hollywood after a botched supermarket heist. Once in Los Angeles, he's paired with Perry van Shrike, a gruff private detective and unlikely mentor, and their initial clash becomes a grudging partnership when they get entangled in a mysterious murder case. The film blends sharp humor, crime investigation, and character-driven storytelling as these two mismatched partners navigate the seedy underbelly of Los Angeles and the cutthroat film industry.