This movie starts with Saze X playing basketball. Suddenly, a lightning bolt hit the earth. They walked towards it and found a boy. The boy's name is Ricky, and he thinks he has forgotten everything. On the other hand, Remy told Sazer-X that a giant monster named Mechanical Giant Bulgario had approached Earth and was destroying buildings. Sazer X still defeated the monster. But then something flashed into their eyes, and Takuto mistook it for a cosmic capsule. In fact, this is the Bosquito people that exist within Bulgaria, which Professor Horiguchi later explained.
为了防止犯罪团伙报复他，信义决定匿名并秘密追捕他们，希望能获得解药。有一天，新一的女友Maurilan来到阿里医生家，寻找她男朋友的下落。被小兰抓住的新一很快编造了自己的名字江户川柯南，然后柯南就和小兰在一起了。小兰的父亲森小五郎是一名私家侦探。新一可以利用他出去和他一起调查夜人的下落。柯南在小学时遇到了布美等小学生，他们一起组织了一支青年侦探队，向罪犯宣战！
