Don’t let the charms of WALL-E‘s plucky little trash compactor fool you, this situation is about as grave as they come.
By the year 2105, the Earth is so saturated with waste that humans are forced to evacuate the planet while robots stay behind on earth to clean up the house that mega consumerism built. By 2805, Earth is still uninhabitable and the search for any sign of vegetation seems impossible. Humans, meanwhile, have succumb to lazy, instant gratification lifestyles while living on large space crafts, which are more Wal-Mart than Star Trek.
Try not to be vehemently disturbed while you watch this, I dare you.