Watch Lupin III: Twilight Gemini no Himitsu Online

It is a cross over between the series Lupin III and Detective Conan and takes place after the television special Lupin the 3rd vs Detective Conan. The plot follows Conan Edogawa who sets out to apprehend Arsène Lupin III, the suspect of stealing a jewel called Cherry Sapphire.

Lupin sets his sights on the legendary big jewel, the Cherry Sapphire, and Conan sets out to stop him. There is a certain mysterious Alan Smithee lurking in the background of the case.

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.

Lupin III, the great phantom thief—the man who loves freedom and lives in romance—never fails to steal his prey. The Cat's Eye are the ladies who run the night splendidly and create commotion in the world. They are sometimes phantom thieves, other times three beautiful sisters who run a café. The mutual target is "Three Paintings"—which were left behind by the three sisters' father, leading to the dream showdown between Lupin and the Cats. Amidst the mix-up of the charming characters, the story eventually leads to the amazing "secret" hidden in the picture... A retro and stylish exhilarating crime action unfolds!

Arsene Lupin III is the grandson of the master thief Arsene Lupin. With his cohorts Daisuke Jigen and Goemon Ishikawa XIII and his love interest Fujiko Mine, he pulls off the greatest heists of all time while always escaping the grasp of Inspector Koichi Zenigata.