Greenland's Viking colony lasted five centuries before its roughly 6,000 settlers vanished sometime in the 1400s, and archaeologists here dig through the physical evidence to explain why. The film follows excavations of 650-year-old remains and the analysis of remarkably preserved Inuit mummies found frozen in the ice, using bone chemistry and burial context to reconstruct how people were living and dying in the colony's final years. Researchers walk through the advance of the Little Ice Age, showing how falling temperatures shortened growing seasons and cut off the colony's trade routes to Europe. The investigation also weighs the role of the medieval church, whose strict tithes and land rules may have left settlers unable to adapt as conditions worsened. Interviews with scientists and archaeologists anchor each piece of evidence, from starvation markers in skeletal remains to shifts in Inuit hunting patterns nearby, building toward a picture of a colony squeezed by climate, isolation, and its own institutions until it disappeared.