Kid and his weapons are investigating the Black Dragon, who have terrorized the Baltic Sea recently. The investigation leads them to a ship called Nidhogg, and an evil soul controlling it. As they find the evil soul, he sends Liz to the hull of the ship. There, she encounters human spirits who guide her to the deck of ship, meeting up with Kid and Patty. Liz and Patty transform into handguns to assist Kid in defeating the evil spirit. However, Crona arrives, slices off the head of the evil spirit, and summons Ragnarok, in preparation in for the upcoming battle.