In Santiago, Chile, a museum exhibition holds mummies that predate the oldest Egyptian mummies by roughly 2,600 years, some dated to nearly 8,000 years old. The film examines how the Chinchorro and later South American cultures achieved that preservation: an elaborate deathbed treatment involving dehydration and the application of herbs and resins, combined with the bone-dry conditions of the Atacama Desert that kept decay from ever taking hold. These rites were reserved for elites, and the bodies on display come wrapped in textiles and jewelry, set alongside murals and pottery excavated from the same sites. The film also follows scientists using imaging technology and DNA analysis on the remains, work that has turned up evidence of the diseases these communities suffered, their diet, and their genetic makeup. The mummification practices differed from culture to culture, but the underlying belief was consistent: a body preserved after death eased its passage to the afterlife or kept ancestors present among the living. The exhibition is treated as both an archaeological record and a demonstration of what modern lab work can still extract from remains thousands of years old.