Cyrus along with his three orphan friends lives are completely changed when a mad scientist adopts them as test subjects. If they survive the test they will have the perfect counter Spirit Beasts to threaten the Monarch Families. Making them the most wanted individuals in humanity. Cyrus and his friends aren't concerned about being manipulated as weapon as long as they have eachother and can get the revenge they seek as well. Even if that mean being the villains of history. Let's not forget the Pestilence ,Giant insects who have pushed humanity to near extinction.