The earth is threatened by dangerous monsters. They destroy all buildings and attack everyone. Police officers and soldiers can not stand on it. Therefore they have called Helios to help them to make the city safe again. Helios owns supernatural powers and strong arms that normal people do not have. Take on the monsters and fight them with fire and electricity, alone or with your teammates. This Beast Fighter series consists of four different fighters each with their own weapons, they all gather and form their own team which can protect the Earth from danger.