In the far future, a time when the sun's radioactive expansion has forced mankind to seek refuge in the deepest part of the ocean, and with little hope of survival, the fate of the Cain family is inevitably and tragically tied to that of our dying world. Stel Cain, the eternal optimist, has begun a perilous journey from the depths of the sea to the surface to intercept a deep-space probe, returned to earth with the location of an inhabitable planet,...