 It s Goemon s Big Day as he s about to marry Murasaki, a sweet and innocent girl. Lupin Jigen, and Fujiko came to the ceremony to witness this moment, but the wedding was interrupted by a group of Fuma Ninjas, who are after Murasaki s family s prized vase. They failed to steal the vase so they kidnap Murasaki. As she ll be a ransom for the vase. The reason why they want that vase is because it s the key to uncovering an ancient treasure hidden in the mountains. Lupin is interested in this so called treasure, but Goemon finds Murasaki s life more important than the treasure. So the quest begins as they race to prevent the Fuma from obtaining the treasure.