The Perfect Weapon plot
"No gun. No knife. No equal."
To deal with the problems with his father, who prefers his younger brother Adam over him, Jeff Sanders studies kenpo under the guidance of Master Lo. After an argument on the college sports ground, Jeff is sent away and cuts all ties with his father. After several years of adventure, Jeff returns to his hometown to visit his friend Kim. Kim is blackmailed by the local Korean mafia. When his friend is murdered by one of Yung's men, Jeff vows revenge.