252: Seizonsha Ari plot
A few weeks after a gigantic earthquake hit Tokyo, normal life is slowly starting again in this metropolis. But the earthquake caused the sea temperature to rise suddenly, causing a huge typhoon. This massive typhoon is headed toward Tokyo with devastating force. The tidal wave generated by the typhoon floods the outskirts of the city. The Tokyo Fire Department dispatches their elite team, using their sonar equipment to detect signals under the water. Underground, in a collapsed subway station, is someone broadcasting a code known only to the rescue team. "252... 252..." - "We have survivors!"