Synopsis
Conan, along with Heiji, Ran, and Kazuha travel the Isle of Mermaids looking for Saori Kadowaki, who had sent a letter to Heiji asking him to save her from being killed by a mermaid.
Conan, along with Heiji, Ran, and Kazuha travel the Isle of Mermaids looking for Saori Kadowaki, who had sent a letter to Heiji asking him to save her from being killed by a mermaid.