Physicist and author Alan Lightman travels from subatomic scales to the edges of observable space, asking what modern physics and cosmology can tell us about meaning and our place in the universe. He meets researchers working at the extremes, including a co-discoverer of one of the most distant galaxies yet identified, and uses their findings as a way into questions about chance, order, and whether the laws that govern atoms and galaxies leave room for anything resembling purpose. The film moves between quantum phenomena, the scale of the cosmos, and reflections on human consciousness, letting Lightman's own commentary tie the science back to the philosophical question driving the film. Interviews with working scientists anchor the more speculative stretches, and the structure keeps returning to a single thread: what it means to be a small, temporary, conscious thing inside a universe built on impersonal physical laws. It plays as a meditation on scientific discovery as much as an explainer of it.