Proxima Centauri, the star nearest our Sun, is the target when a team of astronomers led by Guillem Anglada-Escude launches the Pale Red Dot campaign, a public search for a planet in the star's habitable zone. The film follows the observation runs at the European Southern Observatory's La Silla site in Chile, where researchers measure tiny wobbles in the star's light using the HARPS spectrograph, hunting for the gravitational tug of an orbiting world. Interviews with the astronomers explain how radial velocity data separates a real planet from noise and stellar activity, and how the team live-blogged the search as it happened rather than waiting years to publish. The payoff is Proxima b, a planet a little larger than Earth orbiting in its star's habitable zone, just over four light-years away. The film lays out what that distance actually means for future exploration and why a rocky planet around the closest star to our Sun changed how astronomers talk about the odds of finding life nearby.