Jin Kanzaki and Kouga Amagi have vastly different roles as ZET and ALPHAS, two rival heroes with contrasting methods. ZET, a young man with the ability to transform into a superhuman being, is driven by his power, while ALPHAS, who fights with advanced technology, is guided by a strong sense of justice. Their paths and those of those around them become increasingly entwined as they struggle against monstrous entities known as Players, which threaten humanity's safety.
