Episode Title:Sick as a Dog.Episode Description: The Clark kids meet Ramon Ridley again. He says he knows where the Dogstar is and directs them to Old Earth! Indeed, the Dogstar has returned to Old Earth. Zeke and Alice make the unwise decision to let the dogs out for a walk. Old Earth remains polluted and the toxic fumes practically destroy Zeke and Alice. But Hobart manages to save them, and they immediately leave. Moments later, the Valiant arrives. Once again, so near and yet so far. Ramon chooses to stay on Old Earth and begins cleaning up the planet with a broom.