Mack, an ex-soldier, settles in a town dominated by a nuclear power plant where most residents are employed. His life is tranquil until a band of mercenaries, headed by Ron, seizes the reactor and holds everyone captive, including schoolchildren on a field trip. Mack must act swiftly, relying on his military skills to thwart Ron’s plan to trigger a meltdown. During this intense confrontation, Mack uncovers Ron’s true intentions, revealing a deeper secret lurking within the town.