After dying to save a boy, delinquent tough guy Yusuke Urameshi is granted another chance at life by redeeming himself as a "Spirit Detective."
In mankind's grasp for the future, a sinister foe known only as Gargoyle begins his plans to take over the world. Nadia, with the help of a young inventor, Jean Ratlique, and Captain Nemo of the submarine Nautilus, must fight to save the world from Gargoyle and Neo-Atlantis.
The story is about Tsukamoto Yuuji, a young buisnessman and great swimmer, and Matsui Takahiro, who is still attending school and is also a beginner in swimming.
