Conan and his friends find a paper coded with symbols after mistakenly switching bags with a man .
After the two get off the train , Conan tracks down the bomb before it detonates and removes it from the train .
Conan and Conan 's friends find a paper coded with symbols after mistakenly switching bags with a man .
After the two get off the train , Conan tracks down the bomb before it detonates and removes it from the train .