Almost everything we know today about the beautiful giant ringed planet comes from Cassini, the NASA mission that launched in 1997 and arrived at Saturn in 2004. Since then, the spacecraft has been beaming home miraculous images and scientific data, revealing countless wonders about the planet, its rings, and 62 moons. As the mission approaches its final days in 2017, it attempts one last set of daring maneuvers—diving between the innermost ring and the top of Saturn’s atmosphere. We join NASA engineers for the tense and triumphant moments and discover the wonders that Cassini has revealed over the years. One of the great science stories of our times told accessibly and captivatingly through this documentary.