Showdown (also known as American Karate Tiger) is a 1993 action/martial arts film directed by Robert Radler.
The film stars Billy Blanks, Kenn Scott, Christine Taylor, Ken McLeod, Patrick Kilpatrick, and Brion James.
Billy Grant is a police officer who is called to stop a noise complaint at a local party.
Along with his partner, Spinelli, Billy enters the house to find two men causing all sorts of trouble.
That night, Tom and Rob are at their dojo when the teacher is revealed to be Lee, the troublemaker from the opening of the film whose brother Billy accidentally killed.
That night at the dojo, Tom takes his aggression from the gym fight out on Rob during sparring.
However, Tom doesn't listen and proceeds to humiliate Ken by beating him down with his martial arts skills.
Ken, focusing on his training, tells Julie that as much as he wants to be friends with her, he can't out of fear for Tom's bullying.
She takes him to the dojo, which is also a front for an illegal martial arts competition in which it is revealed that Lee and Tom have been winners in.
The next day, Lee sees the surveillance footage and goes on a rampage when he learns that it was Billy who was responsible.
That same night, Julie, tired of Tom's antics, breaks up with him and calls Ken to pick her up.
The two talk during a small bonfire and Julie asks why Ken is learning martial arts.
Ken tells Julie that he wants to stop Tom because he cares about her and wants to take her from him, in which she replies that he has already won her heart.
The following morning, police tape is all over the gym and Ken is concerned and he thinks Billy may be involved.
Without Billy, Ken begins to train hard and even teaches the nerdy Mike a little martial arts too.
Mike tells Julie that he called the police and told them to show up, but can't remember the time.
Tom, finally realizing his mistake, offers his hand to Ken only to stop and tells him he will see him around and thanks Billy for saving him.
Meanwhile, thanks to what has happened, Spinelli is thrilled to learn Billy is planning a full return to the police force.