Draw the Line (2014)

Chad Williamson is a college student. He meets the girl of his dreams named Sarah, not knowing that her ex-boyfriend Derek is very possessive of her. After many days of being bullied by Derek. Chad learns Martial Arts from Mr. Yokimoto, a humble wise man. After Derek learns of Chad's and Sarah's relationship he gets out of control and hurts Sarah. That's when Chad draws the line and puts an end to Derek's madness.