The Season 30 premiere examines the resurgence of wildlife in the region around the Chernobyl power plant, the site of a 1986 Ukraine nuclear accident. The disaster caused radioactive contamination of the countryside and led to the creation of a no-man's-zone. Here, scientists monitoring wildlife, especially wolves, are accompanied on their studies. Included: the wildlife that lives in the ghost town of Pripyat, which was once home to 58,000 people. Narrator: Harry Smith.