They take on a request to find a lost cat , they discover that the cat had invaded a home where they discover a man drowned in his bathtub .
Later , Conan and his friends form a detective group called The Junior Detective League .
They take on a request to find a lost cat , they discover that the cat had invaded a home where they discover a man drowned in Conan 's bathtub .
Later , Conan and his friends form a detective group called The Junior Detective League .