A lone turtle wakes up outside of a sewer pipe in the Chernobyl exclusion zone. They have been separated from their turtle partner, and have fleeting memories of where they came from. They meet a genetics obsessed rat named Gaz who agrees to help them find their way, so long as they retrieve his research and various components from dangerous areas in and around the reactor. But be careful-- if you stray too close, the radiation might mutate you beyond recognition...