The male protagonist time-travels to become the Emperor of Great Qian, but is inflicted with a strange poison leaving him with only three days left to live. At this critical moment, he binds with the "Strongest Tyrant System." As long as he performs tyrannical acts that deduct national fortune points, he will receive rich rewards, and accumulating a deduction of 100,000 national fortune points will even allow him to ascend to immortality and live forever. For survival and eternal life, the male protagonist embarks on an absurd path of a tyrant, triggering tyrant skills and leveling up all the way.