Sergeant William Pérez is your typical career soldier for the Mars Armed Forces. When he and his squad are sent to a stranded ship at the end of the solar system, they suddenly find themselves in a desperate fight against alien invaders.
After witnessing his entire squad die except for one greenhorn private, Perez must find a way off the doomed ship and beam a long-distance warning out to Earth and Mars before it is too late.
The aliens are on a path of annihilation. Will Perez survive long enough to warn the rest of humanity?