A great teacher can educate, empower and uplift. "Kling: A Teacher Who Defied The System" is a tribute to one such extraordinary educator. In the West Side of Chicago in the mid-80s, 33-year-old Thomas Kling vowed to transform the lives of dozens of students lost in the pressure cooker of drugs and racism. His profound and lasting impact now shines in a documentary created by the very lives he saved.