Aboard the Earth-bound ship, Captain Johner teaches Zarz how the ship runs. Two crewmen object to the "creatures" and distrust them. Later the ship is attacked by (some unknown ship's) missiles. Shields hold, but the hypatomic motors spill radiation. Humans collapse, but the Aliens are unaffected and steer the ship into an asteroid belt, safe. Humans revive. An objector admits, "I'll be more careful before I pass judgment on anything from now on!"