Mysterious entities have appeared, their origins unknown. These creatures invade human hosts, seizing control and transforming them into grotesque beings known as Necro-borgs. These Necro-borgs engage in deadly combat with one another until only one remains. The questions of their origin and purpose remain unanswered. Yuji and Kaoru, each harboring their own hidden pasts, find themselves entangled in the terrifying conflicts of the Necro-borgs. What destiny awaits them?