The Terminator film franchise (first introduced in 1984) depicts an artificial intelligence called Skynet becoming self-aware in 1997 and trying to exterminate humanity by instigating nuclear war between the United States and Russia, which results in the death of three billion people. Many of the survivors eventually band together to destroy Skynet and its army of robots (called "terminators"). The series follows resistance leader John Connor and his mother, Sarah Connor, and their adventures before and after the nuclear strike (called "Judgment Day" in the film series).