The episode focuses on Lupin's gang descending upon the Kingdom of Dorrente in order to rescue a famous thief who has been detained. While this takes place, the most notorious thieves from around the world gather in the kingdom.

(Source: MAL News)

Goemon's wedding to Murasaki Inabe, daughter of a samurai clan's leader, is interrupted when the Fuma ninjas attack, kidnapping the bride-to-be and demanding her family's ancient treasure as ransom. Lupin, Jigen, Goemon and Fujiko work together once again to try to save Murasaki and get to the treasure before the Fuma can steal it. (Source: ANN)

In a country called Vesparand, a new mineral with super stealth properties has been discovered which attracts Lupin's attention. At the same time the untimely deaths of Queen Sakura and her son, Prince Gill, leave Princess Mira next in succession to the throne. During a trip to Japan, Princess Mira finds her double in Ran and takes the opportunity to trade places, which ends with Ran being spirited away to Vesparand with Conan, Zenigata, Kogoro Mouri, Lupin and Fujiko in tow. There they meet a waiting Jigen and solve the mystery of the deaths of the Queen and Prince. (Source: ANN)

Yasuo works at a ramen restaurant and is dating the pretty news reporter Yukiko. However, things aren't going well for him financially and after a customer leaves a green jacket behind, Yasuo starts adding to his income by walking the crowded streets of the Tokyo metroplex and stealing people's wallets. With this, he's able to buy his girlfriend a nice ring even though she says he didn't need to buy this for her. Over time, Yasuo becomes obsessed with becoming Lupin to the point that he reads and watches everything regarding him, he even works with Jigen for a time. However, when Yasuo learns of the Ice Cube diamond, he knows that if he can steal this, he will be the real Lupin. (Source: Lupin Wiki, edited)