Tragedy, betrayal and a mysterious discovery fuel a woman's vengeance for the loss of her tribe and family in this special episode of "Kingdom."

In the 1970s, Korea is under the absolute control of President Park, who controls the KCIA, the organization with the edge over any branch of government.

When an earthquake hits a Korean village housing a run-down nuclear power plant, a man risks his life to save the country from imminent disaster.