Hancock (Will Smith) is an invulnerable superman, and criminals are terrified by him. However, every time this superman confronts criminals, he makes a big fuss and causes serious damage, which is a huge threat to the lives and public property of citizens. This is why he still cannot be recognized by the public despite his unique abilities. His irritable and undefending personality further intensifies the conflict. On this day, public relations manager Ray Embrey (Jason Bateman) was very unlucky. Not only could he not sell his global love concept, but he was also stuck on the train track on his way home and was almost run over by a train. Hancock appeared in time to save his life, and irresistibly destroyed the train and the traffic on the scene, causing public outrage. Ray had a flash of inspiration and decided to package Hancock and shape him into a hero loved by all. Unexpectedly, the biggest opposition came from his wife Mary (Charlize Theron), who insisted that Hancock leave her family. As things developed, a surprising and lingering front edge was involved.