Rejected and sentenced to death, Professor Sato, a genius of his time, decided to escape alone to a remote island to continue his research on creating the ultimate monster. His efforts bore fruit two decades later in the form of his humanoid lizard monster, Asoka. Blessed with immense strength and fury, Asoka became a force of destruction for both enemies and allies alike. Meanwhile, Professor Sato’s old colleagues and friends, Professor Laurel and Professor Clarisa, also created their own monster under orders from the United Nations of Earth. Their creation, Sato, was labeled humanity's best weapon against monsters. With two opposing forces aiming for the same goal, who will triumph and become the ultimate monster? And what will they do when they realize the monster they nurtured will soon be the one to decide the fate of the world?