Apollo Zero lays out the case that the six Apollo moon landings were staged, built around a simple gap its narrators keep returning to: since 1972, no astronaut from any nation has traveled more than about 400 miles from Earth, yet NASA says three men crossed 240,000 miles in 1969 with 1960s computing power. The film works through the familiar exhibits of the hoax argument, the Van Allen radiation belts, the physics of the flag's movement, and photographic inconsistencies in the official NASA imagery, presenting each as evidence that the missions could not have happened as described. Interviews and archival mission footage are cut against present-day commentary questioning the technology, funding pressures, and Cold War stakes that pushed NASA to claim victory in the space race. Rather than settling on a single alternative explanation, the film stays focused on undermining the official record, asking viewers to weigh the distance between what was claimed in 1969 and what has been achieved since.