When the earthquake and tsunami wreaked havoc on the Pacific Rim in 2011, triggering a nuclear meltdown at Japan’s Fukushima power plant, the PBS series Frontline jumped into action and did a very well-reported story on it the following year. Three years after that broadcast, Nova returns to the story. What else is left to tell? Start with this stunner of a fact: There were two nuclear power plants in Fukushima, only a few miles apart – and the second one avoided disaster. How? Tune