TIME TO FIGHT BACK--Sarah is not coping well with her father's death and decides to leave town. Concerned, Mike goes looking for her and in return gets the answers he has been searching for about his past. Meanwhile, the NSA has decided to dismantle the SSC now that Dr. Graiman is dead and they can then move forward with KITT's nemesis KARR. With Torres' permission they take out KITT's chip that contains his personality and memories and place it in KARR. Upset by what has happened, Mike, Sarah, Billy and Zoe devise a plan to find where KITT has been taken and get him up and running and destroy the evil KARR once and for all.