A creature is roaming around an abandoned town, aging everything it touches at an accelerated rate. When Ben, Gwen, and Kevin investigate, they meet Paradox, a scientist from the 1950s who was sucked into the event horizon of his time-travel experiment. Displaced from time and space, Paradox has existed for 100,000 years and is able to move through time at will. However, the same mistake that rendered him ageless created the creature they seek. Ben realizes that the creature is not acting like a monster, but a confused person, and has Paradox take them back to the day of the accident. There, Ben rescues Paradox's assistant Hugo, nullifying the creature's existence. In the present, the now old assistant joins Paradox in exploring time and space.