Already Happened is an 18-minute documentary directed by Hao Zhou, who also wrote the film. The documentary features Hao Zhou, Wes Worthing, and Marc Marcos in its cast. This compact documentary explores its subject matter through the perspectives and participation of its featured individuals, offering viewers a focused look at events and circumstances that have already transpired. The film's brief runtime allows for an intimate and concentrated examination of its themes, making efficient use of its duration to convey its message. As both the director and writer, Hao Zhou brings a unified creative vision to the project, shaping how the documentary unfolds and what story it tells through the contributions of its cast members.