Young Tena Nobuyuki is living his own life. Not until an accident redered him being fused with an experimental droid known as Kaizer M.T.D. This is toall hard for him and it's getting worse. Along with a multitude of metahumans appearing all over san fransisco, a mysterious figure wants to take the source of his power and the reccurring nightmarish versions of his former self, he need to tackle it all for the sake of his loved ones and everyone in the city.