Jack is left in charge while Commander Cruger is away at an intergalactic conference. When Sky’s old friend Dru Harrington is rescued from a burning S.P.D spaceship that crashed landed on Earth, he returns to the Academy. While Sky is delighted to see his old comrade again, Jack is immediately suspicious and states that Dru must be reevaluted. Sky realizes his mistake with trusting his old friend when Doggie returns to the Academy, and is wounded by an intruder and hospitalized. Sky is attacked by the intruder, and Giganus reveals his identity as Dru. They attack one another and Sky proves to be the loser after Dru tells Sky he works for Broodwing. Jack allows Sky a head start to confront Dru in one final battle.