In 2001, an alien species called BETA (Beings of Extra Terrestrial origin which is Adversary of human race) invaded Earth. Over the next 20 years, they conquered most of the Eurasian continent, reducing the global population by billions. In response, humanity accelerated the development of tactical weapons (machines). Consequently, elite pilots from around the world began gathering at a UN base in Alaska named Yukon to join the Prominence Project. This initiative is a joint Russian-American effort to research and develop tactical weapons against BETA, with the pilots tasked to test prototypes, which sometimes involves pitting them against one another...