In this world, sea levels have risen due to environmental destruction and climate change. Surveying the state of affairs, a professor predicts the extinction of humankind. He puts Judd, his cat, into a cryogenic sleep capsule to save him. He gives Judd medicine to make him immortal, then sets the capsule to wake him after 10,000 years. The professor also included a sample of Judd's cells in the capsule in case he didn't survive.
The rising seas eventually annihilate the human species, along with almost all other land-dwelling creatures. After some time, a highly intelligent squid species emerges. This species migrates onto land, and they eventually develop the ability to switch into a humanoid form.