In the twenty-second century Earth obtains limitless, free energy from a source science little understands: an exchange between Earth and a parallel universe, using a process devised by the aliens. But even free energy has a price. The transference process itself will eventually lead to the destruction of the Earth’s Sunand of Earth itself. Only a few know the terrifying truthan outcast Earth scientist, a rebellious alien inhabitant of a dying planet, a lunar-born human intuitionist who senses the imminent annihilation of the Sun. They know the truthbut who will listen? They have foreseen the cost of abundant energybut who will believe? These few beings, human and alien, hold the key to the Earth’s survival.