Physicist Brian Cox traces gravity from Isaac Newton's first equations to Einstein's General Relativity, using the force as a thread through the entire cosmos. The film moves from continents shaped by tectonic pressure and the Moon's tidally locked orbit to the collision course now underway between the Milky Way and Andromeda. Along the way it stops at the extremes: the G-forces astronauts endure during launch and reentry, the crushing density of neutron stars left behind when massive suns die, and the supermassive black holes where gravity becomes strong enough to tear spacetime itself. Archival footage, CGI visualizations of orbits and collapsing stars, and studio-style narration carry the science, with Cox walking through the underlying physics rather than just describing effects. The structure is historical and expository at once, using each new phenomenon to show how a single force, first described falling an apple, ends up governing galaxies. It closes on gravity's role as the organizing principle behind everything from planetary orbits to the large-scale structure of the universe.