The Faceless Creature attempts to take revenge on his own planet and the Earth, as well as the two policemen who previously foiled his plans.; When young Tommy Parker finds his baby picture on display in the Space Museum, his parents tell him how he once saved them from paralyzing alien pollen.; Professor Ross builds a matter-transmitter that can be used for space exploration instead of space ships, but it threatens to start a chain-reaction that will destroy the Earth unless explorer Alan Pierce can travel to another planet and find Element X, which will stop the process.