Scattered throughout the solar system are a group of immortals, dubbed the Molemen.  The latest recruit is Dr. Guess, an eminent scientist.  But Guess has been taken over by the all-seeing, all-hearing supercomputer Extro, which controls all mechanical functions on Earth.  And when a member of the Molemen turns traitor, the impossible happens: they start to die.  It’s up to Guig, Hillel and their colleagues to destroy Extro and the renegade or be destroyed themselves.