Prologue: Uncontrolled Descent
While they're still at odds with each other but confined to sickbay, Jim tells Spock why he drove his father's car off a ledge. As a child he hadn't fully come to terms with his father's death, and he thought if he acted out, his father would come back to stop him from wrecking the car. Spock assumes that's the end of the story, but then he admits that as the car approached the cliff, he heard a voice...