When a Navajo couple discovers their children have a disorder that makes exposure to sunlight fatal, they also learn their reservation is a hotbed for this rare genetic disease. Why? Sun Kissed follows Dorey and Yolanda Nez as they confront cultural taboos, tribal history and their own unconventional choices to learn the shocking truth: The consequences of the Navajos’ Long Walk — their forced relocation by the U.S. military in 1864 — are far from over.

Sun Kissed is streaming at pbs.org through November 17, 2012