Humanity's oldest wish, to stop aging, gets a modern scientific treatment in this feature-length Spark documentary. The film moves through labs and interviews with researchers working on the biology of aging itself rather than individual diseases, covering areas like senolytics, which target and clear out aging cells, gene therapy aimed at resetting cellular age, and calorie restriction studies that have extended lifespan in animal models. Scientists explain how the same interventions that slow aging in mice are now being tested for possible human application, and the film weighs how close these breakthroughs actually are to reaching people versus how much remains speculative. It touches on the business side too, noting the wealthy investors and startups racing to fund life-extension research. Rather than promising immortality, the documentary lays out the incremental science of lifespan extension and lets researchers describe both the genuine progress and the significant unknowns still standing between current experiments and a meaningfully longer human life.