500 years into the future, the earth is a dry wasteland destroyed by humans. Doctor Alma, a fluffy, brilliant Vulkeet (a cross between a parakeet and vulture) who drives a Vespa, must cure the only creatures left who can save the world by bringing back the rain - the bizarre and loveable Homeys who have fallen ill with a mysterious sickness.

In a post-apocalyptic future where humanity has fallen apart, a group of scientists and an animated sign complete the construction of a new human race and meet a groundhog climatologist who prepares them for their mission to restore balance to the decimated Earth.