The story is set in the not-so-distant future. Five “Black Points” suddenly appeared around the world as portals to parallel worlds. Immediately after, strange creatures began their invasion from these portals. These creatures are the inhabitants of five worlds – the same worlds in different time-frames. In order to ensure their own future time-frame survives, each of the five invasion forces battle to wipe the other future time-frames out. The key is one card-shaped device.