Laser Gates

The thousand galaxies quake at the news: the Cryptic Computer, the galactic defense synthesizer which has maintained peace for the five centuries since the Wars on Zevon, has malfunctioned! Four Failsafe Detonators inside the Computer will now initiate universal self-destruct! The Governors of Enderby order the Dante Dart into action. Only it can spiral down through the nearly impenetrable defenses of the Computer in
order to reach and destroy the Detonators!