Watch or Download Detective Conan Movie 11 : Jolly Roger in the Deep Azure

The movie starts off with a robbery chase scene. The robbers are being chased by Miwako Sato and Wataru Takagi. They eventually meet and drive straight into each other, but the robbers are the first to flinch. They flip over and crash. As Takagi and Sato attend to them, the male says "Koumi Island" and "Jolly Roger" and then passes out.

Meanwhile, Kogoro Mouri gets a request from the head of tourism (Jouji Iwanaga) to go to Koumi Island for a case, so he brings Conan Edogawa, the Detective Boys, Professor Agasa, Ran Mouri, and Sonoko Suzuki with him. The first thing Conan notices is that there are a lot of treasure hunters there. Since the hotel is full, Iwanaga takes them to stay with a man named "Kazuo Mima". After they are all settled in, Iwanaga asks the group if they will participate in a treasure hunt. The Detective Boys all raise their hands (except Ai Haibara and Conan), but when he asks Mouri, he declines. The kids get their scavenger hunt map and clues while Iwanaga drops Ran and Sonoko at the diving shop.

The kids go and rent out bikes like Iwanaga told them to. While diving with the diving instructor Kimiko Yamaguchi, they see sharks circling around a small area. They soon find out that a man has died, and his friend is trying to fight off the sharks and bring him to land. The Detective Boys find out their first clue mainly because of Conan. Ai tells Conan secretly that she saw someone dead in a motor boat being brought to the island. So Conan and Ai go to see the body at the hospital and leave the rest of the kids to figure out the next puzzle.