The Drakuls have found the solar system. A merciless race, there is nothing left once the Drakuls have conquered a civilization except the bones of its dead. When the first Drakul exploratory ship emerges from the stargate, Earth's days become numbered. Although LCDR Shawn "Calvin" Hobbs and the crew of the TSS Vella Gulf came back with a battleship from their last mission, it won't be enough to defend the solar system from the Drakul menace.

Lieutenant Commander Shawn 'Calvin' Hobbs and his special forces platoon just returned from a three-month mission to the stars. The technology they brought back will help with the Earth's defense, but it won't be enough to hold off the alien menace headed their way. Although they made it back alive, they returned without any new allies or help in building the fleet necessary to ensure the Earth's survival. They've got to go back.

A mysterious race from an alternate universe has allied itself with the Jotunn, and the alliance is set on destroying the Aesir and bringing about Ragnarok. With an ability to jump between universes and unstoppable time-based weapons, the Efreet seem invincible. The Vella Gulf is the only ship to survive its first meeting with the Efreet, but only through a fluke of luck.

The war with the Shaitans continues, and Lieutenant Commander Shawn "Calvin" Hobbs has stayed behind to help the reptilian Ssselipsssiss race fight the Shaitans while his ship, the TSS Vella Gulf, has gone for aid. Formerly enemies, Calvin now finds himself supporting the Ssselipsssiss in their war against the Shaitans in a "must-win" situation. If the Ssselipsssiss fall, Terra is next! Able to operate in two universes and armed with unavoidable time-based weapons, the Shaitans have proven unstoppable.

The Confederation has decided that Earth represents a significant danger to their future plans of Empire. A massive fleet is dispatched to destroy the Solar System and every Human on its planets, moons, and asteroids. If the Solar System falls, the fledging Human Empire will have no chance of survival. Admiral Reynolds is tasked with defending the Solar System and preserving as many Human lives as possible. He knows he faces a nearly impossible task as he does not have the ships needed to stop the coming attack.