In a bleak, futuristic world haunted by the shadow of an ancient alien conquest, humanity teeters on the brink of extinction. Centuries ago, Earth was overtaken by the Chronos, a ruthless and intelligent alien species known as the Chromaniums, and their monstrous allies, the Terradons - parasitic war-beasts that infect and mutate humans into living weapons. Now, in the future, humanity's final hope lies hidden within the mind of Dr. Glenn Overton, a brilliant but unstable scientist who holds the secret key to humanity's survival - a cure that could stop the alien infection and turn the tide of the war. But Overton's growing paranoia and distrust of mankind make him a wild card in a losing game. Crossing his path is Thomas, a seasoned operative from the Falcone Strike Force, the last organized human military faction. Tasked with a suicide mission to infiltrate Sector 5, the heart of the alien hive, Thomas soon discovers that his assignment hides a darker truth - one that could shatter what remains of human faith.