Schoolmates Teru (Satoshi Tsumabuki) and Ako (Sayaka Matsuda) survive disaster only to find themselves in a chaotic wasteland in this surreal adventure. After a devastating explosion, the two emerge from their express train unharmed. But the world outside is now a desolate landscape overrun by anarchists and villains. Determined to find the cause of the destruction, the pair heads to Tokyo and uncovers a mysterious force called Dragonhead.