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Movies like Deadlock (2021)

Mack is a former soldier who, after the war, moved to a town with a nuclear power plant, where nearly everybody works. Life is peaceful for him there, until a gang of mercenaries led by Ron storm the reactor and take everybody hostage, including a group of children on a school trip. Now Mack is in a race against the clock and must use his military training to defeat Ron before he puts the reactor into meltdown. Along the way he discovers Ron’s motive, which unravels a greater secret Mack’s town is hiding.