In the future, a brutal nuclear war broke out on Earth. The once-powerful United States of America was also wiped out in a series of self-destructive wars. Today, with Washington and other places as the center, high walls will isolate the nuclear-contaminated land, and the only remaining 800 million humans live in this closed space called Super City One. But humans have never learned their lessons, and various vicious crimes have emerged in an endless stream, and the earth has been stained with blood. During this period, a group of violent machines called "Judge SWAT" was established, and the cold and capable Dredd (played by Karl Urban) was one of them. He took over the training and evaluation of the newcomer Cassandra Anderson (played by Olivia Thirlby), and investigated the seemingly endless vicious cases in the city with him. Surrounding various crimes, the super evil female leader "Ma-Ma" (played by Lena Headey) surfaced and became the biggest opponent of the SWAT partner...