Three friends parted ways after graduating from high school. One of them abandoned his home to live alone in the city. One was left behind by her guardian who finally got married and left for another country. One was the successor of a virtual reality hardware development company who was then disowned by his father, the company's owner and president. He then disappeared without a trace.One day, the three reunited. As they met each other again, their lives that used to be gray and without purpose started to turn its gears, and the turning point is a VRMMO called Heaven Conquerors Online!