From the bottom of the oceans of the world a hidden threat stalks mankind—probing, testing our weapons and defenses, biding time to strike. In the summer of 2039, this aquatic foe unleashes surprise attacks against coastal cities around the globe. Mankind faces a sophisticated new enemy, arrived from the depths of space and lurking in the dark blackness of the seas.

Almost five years ago, America—as everyone knew it—came to an abrupt end in a spectacular coup d'état. It was called the Liberation by those progressives and radicals that screamed for its outcome; the Fall by its victims whose freedoms were trampled. The White House and the Capitol were overrun by anarchists, and the leaders of the once-proud nation were either imprisoned or sent to social quarantine camps. The president was arrested and eventually died in prison, or so everyone was led to believe. America was rebooted in a new progressive/socialist image, Newmerica.

This anthology of short stories takes the listener to Connecticut, Boston, Guam, Savannah, Houston, San Francisco, Oregon, and overseas. Valiant tank crews, creative techs, brave officers, plucky drone operators, bold medics, cunning pararescue troops, determined ASHUR and Trident pilots, and daring militia units wage war along every coastline in the US.

Legion Dark Ops has always been a unit shrouded in secrecy. Tasked with performing covert missions, its kill teams are filled with the best warriors from within the ranks of the Legion. Kel Turner is one of the youngest legionnaires ever to be selected to its ranks. After many battles and trials, he is faced with the greatest challenge of his life - operating by himself on a remote planet at the galaxy's edge, a foot soldier for the policies of the duplicitous House of Reason, tasked with solving a crisis that would take ten kill teams to resolve.

A great darkness has befallen the galaxy, and the armies of Chaos are rampant. To survive, humanity must retaliate and take back what they have lost. By the will of the reborn primarch, Roboute Guilliman, is the Indomitus Crusade launched - a military undertaking that eclipses all others in known history. From the Throneworld of Terra does the Avenging Son hurl his fleets, their mission the very salvation of mankind.