Betty Davidson

When the grandson of a gun wielding woman is murdered by neo-nazi surf punks in the post-apocalyptic future, this grandma hunts them down for some bloodthirsty revenge.

One of Tanaka's underlings has stolen a rare statuette that he had planned to use as a peace offering between the local Yakusa and Chinese Tong. He hires two private investigators to exchange ransom money to recover the statuette, but the trade goes down bad and Clay Roth is killed. This angers Roth's brothers and father, all combat veterans, and they go after the people responsible