Kensuke Hanasaki is an adrenaline junky who enjoys the thrill of solving any case that comes his way. As part of the Boy’s Detectives’ Club, he’s always ready to jump into adventure. But when he comes across Kobayashi, a boy who cannot die, his life becomes even more exciting. That is, until they come up against the fiendish villain, Twenty Faces and see what true danger really looks like!