When Kid is unable to make a move with his hand glider due to a rainstorm, and international thief known as Nightmare appears on the scene and helps him escape. The cost of using Nightmare though has a history. Nightmare's partners typically end up dead or captured by police the next day with their half of the loot found on them. A week passes after Nightmare helps Kid escape and Inspector Nakamori calls Kaito in to inspect the tricks he has to trap Kid as he attempts to steal the rare black opal jewels. Kaito finds no flaws in the plan. During the process he meets Interpol agent Chuck Connery and his son Kenta Connery. Kenta suffers from a rare brain disease that could lead to his death if it isn't treated. Chuck has promised Kenta that if Nightmare is stopped they will be able to treat the disease, but until then he must travel the world looking for a way to stop him. Kenta is being taken care of by a Japanese orphanage and has snuck out to tell his father the orphanage has found so (thetvdb.com)