A group calling itself the Red Siamese Cats hijacks a state-of-the-art airship mid-flight, right as phantom thief Kaito Kid is making his own attempt on the jewel Lady Sky aboard. The hijackers claim to have released a lethal bacteria into the cabin and threaten to detonate the ship unless their demands are met, trapping Conan Edogawa, Ran Mouri, and the other passengers thousands of feet above ground. With no way off and time running short, Conan has to team up with the very thief he usually chases to figure out what the hijackers are really after.