Saku's work led to the creation of Domainbots, micro-sized robots that could be injected into the internet lines to eradicate viruses. Masaki was the first and most powerful. He was armed with a jet pack, fusion cannon, laser gun, and light sword.

However, a counter-program was created by an unknown agency to combat the Domainbots. Known as Betabots, they are the antithesis of Masaki and he is sworn to destroy them all!