No Retreat, No Surrender (1986)

"Tonight, He either fights for his life or he'll be running for the rest of it."

The mob is trying to strongarm local martial arts schools, forcing young Jason Stillwell and his family to move after his father is injured defending their dojo. With his father now rejecting violence, Jason is forced to train on his own to protect himself and his best friend from the members of a rival karate school.