This is the Lupin special that reminds you the crew's best trick was never the vault, it was the walk in the front door. Doruenthe is a whole kingdom built as a cage, and Lupin strolls into it to spring an old gentleman thief while every other big name in the profession circles the same prize. The pleasure here is watching the pecking order sort itself out: rival thieves from around the world showing off, and Lupin letting them, because the score he's actually running is the secret the kingdom is sitting on. Jigen covers the angles, Goemon cuts what needs cutting, Fujiko is exactly as trustworthy as you'd expect, and Zenigata treats a fortress full of criminals like a personal invitation. It's a ninety-minute annual ritual done right. No lore homework, just a plan you don't see whole until the last five minutes.

Lupin III and his crew slip into the Kingdom of Doruenthe on a mission to free a renowned gentleman thief who is being held captive there. They are not the only ones drawn to the place: the most notorious thieves from around the world are converging on the kingdom at the same moment. While the rescue plays out, Lupin sets out to expose a secret the kingdom has been keeping hidden. This one-episode special is an action adventure built around a jailbreak and a gathering of rival thieves.