After a two decade long cold war, a new threat arises.

Erik Frost, captain of the freighter Vagabond, and his crew have stumbled upon the construction of a massive Syndicate warship deep in the asteroid field. After a daring escape, he sent a warning across the system to let Earth and the colonies know what was coming.

With the Indomitable on a steady advance toward the inner system and Earth, the Coalition government must decide how best to protect themselves from the biggest threat the solar system has ever seen.

But then a bombing on Earth forces the people to question which threat is greater, the ship several months away or the killers in their midst. Will war between the two superpowers tear the system apart, or will strife from within do more damage than the massive cruiser ever could?