Human space exploration had just entered a new era. A human-like species called the Nemesis was discovered on a distant planet alongside valuable resources, and exchange between the two civilizations began. The Nemesis appeared peaceful — a harbinger of a new chapter for Earth. Their true intention was the opposite: seize Earth's resources, dominate humanity, and ultimately transform the species through genetic injection into something new. By the time the plan became clear, major cities had already fallen. A small group of survivors organized into a special forces unit called Vega and began fighting back. Through repeated engagements, Vega uncovered the full scope of what the Nemesis intended — and launched a daring operation to end it.