Set in the year 2052, Earth has attained lasting peace until the arrival of the Death Force—merciless aliens from a collapsing star system—who seek a new home. They launch an assault on Earth with a colossal orbital cruiser named Terror Star, then begin reshaping the planet to suit their needs. Humanity"s only hope lies with Colin Collins and a handful of surviving classmates who must pilot a covert underwater vessel capable of fighting enemies both beneath the waves and beyond the skies, confronting an unprecedented invasion that threatens all life.