Sarah goes to her father's Hawaii beach house in order to cope with her father's death.  Mike tries to get her to come back after he gets a message about his past as KARR's driver.  Meanwhile the NSA shuts down the program and take KITT's AI out.  Their goal is to put it into KARR.  Sarah finds a message from her father and learns that he's left her everything.  She returns and helps Zoe and Billy reconstruct an new chip for KITT.  Now Mike just needs to steal it back.  During their escape, the newly activated KARR heads out to intercept KITT.