Persephone is missing. When Hades uses every resource at his disposal and fails to locate his wife, he takes drastic measures. He hires the Montague & Strong Detective Agency to locate her, bring her back to him, and most importantly, find out who dared to kidnap his wife. Now Monty & Strong must uncover a plot to overthrow Hades and steal the underworld, return Persephone to her husband unharmed, and prevent a god from unleashing his wrath and starting a celestial battle royale. It’s not the end of the world…but it’s going to be close.