Everything's finally looking up for Flavie: her sister's been visiting, her relationship with Marco is... okay, but, most of all, it's finally getting warmer! When it looks like winter might be ending, Flavie volunteers to assist on an university research project to find out if the temperature has been rising across the entire region. It's a good distraction from Marco and the trip is exactly what Flavie needs, until she and the research team venture to dangerous Free Territories, where the old reactor that started the nuclear winter began. Cartoonist Cab delivers the heartfelt conclusion to Flavie's story in this third volume of Nuclear Winter.