Sonoko,Ran,and Conan are at the beach one day.They have already been there for a day. A man who just got dumped by his girlfriend becomes very interested in Sonoko (Conan thinks that this is an miracle). As they are chatting about murders happening in the forests by the beach, someone yells that the body of a woman had been found in the forest. After questioning the police, Conan finds out that every victim who was killed in the forest had sienna-colored hair and was a woman. The man and Sonoko then planned to meet at outside the hotel Conan and others are staying. But Sonoko is attacked while she goes to find her purse. Why?
