In the latter half of the 20th century, a mysterious life form called "Yperit" suddenly appeared on Earth, which destroyed the humanity by the harmful gas in an attempt to replace mankind. In the snowy mountains where the gas cannot reach, there exists a top-secret research facility that creates immortal soldiers, "Huntresses" that have been strengthened by drugs. The one who appeared in front of the six women was a former soldier Deluha, who has shown his power and became the captain of the Huntresses. The game between Deluha and the Huntresses is about to begin....