The top scientists on Neuth, a perfectly ecological planet have predicted an environmental doomsday for Earth. Garth Davenger is the only Neuthling to grow up watching Earth's television signals. His father was a scientist who died trying to get Earth a message. Now a rebellious college student, Garth goes against the Safety Council's policy of not interfering with interplanetary affairs and embarks on a dangerous mission to show the people of Earth how to rescue their planet as, The Earth Avenger.