Excalibur is the sword about which legends are told. Carved into stone, it once established King Arthur's right to rule Britain. It was Arthur who drew Excalibur from the stone, but at that very moment a colossal amount of energy was released, causing the universe to split into many different ones. In each of them there is a different Arthur and a different Excalibur. There are more than a million of them in total. But besides the person wielding the sword, there are also those who wish to destroy Excalibur. They too are many; each universe has its own villain. Everything would be fine if these universes suddenly did not start intersecting and overlapping each other. To bring order to this tangled story, six Arthurs gathered together: Leader, Steel Fist, Wandering Cat, Highness, Alchemist, and Vagabond. Their mission is to defeat the other Arthurs and protect history from the chaos unfolding within it. In addition to fighting other Arthurs, they must also battle common enemies, and they should not forget about their own country.
