In "Thief," Frank, a skilled safecracker renowned for executing high-stakes diamond heists, is ready to leave his criminal past behind. His dream is to retire and settle down, creating a family life filled with love and stability. To fast-track his exit from the underworld, he partners with a powerful gangster for a lucrative job that promises to secure his future. As he navigates the dangerous world of crime, Frank's aspirations clash with the harsh realities of his chosen path.