As they Detective Boys are trying to find a way out with a wounded Conan, they come across a four way intersection. the three men also come across this, and figure that they went into one of the tunnels not knowing that they're in front of the intersection in an unnoticed area. Meanwhile, Ai and Dr. Agasa start to get worried. They then go search for the missing Detective Boys and Conan. It's up to the trio of the Detective Boys to carry the unconsious Conan and get out alive. Though they get out, Conan is rushed to the hospital. At the hospital, the doctors tell Ran, Kogoro and the others that Conan may not live due to he lost a lot of blood. Ran jumps in and donates her blood to save Conan's life. Has Ran finally figured the true identity of Conan? And what's with Ai coming in with a gun?