The second story in the ULTIMATE GALACTUS trilogy that began with ULTIMATE NIGHTMARE! A hidden alien race is trying desperately to keep man from reaching the stars. Cape Canaveral scientist Phillip Lawson, secretly a Kree soldier assigned to a mission on our planet, knows of the hideous plan and will use all his considerable power to stop it...the power of Captain Mahr Vehl! But his sudden betrayal may mean a swift doom for the Earth. Starring the Ultimates and the Ultimate Fantastic Four!

Collects ULTIMATE SECRET #1-4.