For decades a war between humans and giant monsters known as Kaiju has been raging on. In order to combat the Kaiju, humans invented giant mechs that came to be known as Guardians. Despite the Guardians proving themselves to be a threat to the kaiju, the conflict continued with no end in sight. Scornar is a Kaiju that joins the KSCF (Kaiju Special Combat Force) as a double agent working to bring them down from within. He wishes to end the war before any more lives are lost. Alexander is a Guardian pilot in training known for his ruthless fighting style. He is fueled by revenge and a goal to wipe out all Kaiju. Will they find a way to look past the war and form an unbreakable bond? Or will they go down different paths and end up destroying each other?