||From the moment AJ and his friends, Emily Peralta and Freddy ?Hangman? Gallows, step off the train in Old Chinatown, AJ's sixth sense kicks in?an omen of looming danger! A mysterious fortune teller warns AJ and his friends of vile forces and impending doom, 'until the Day of the Jewel.' AJ should have listened.A shadowy stranger lurks in the crowded alleyways and spooks AJ by slipping him a bizarre card with a threatening message. Is it a joke or are AJ and his friends being stalked by a man in black? In a twist of events, AJ and Freddy end up lost in a dark and marshy bog, where they are surrounded by thick fog, creepy sounds, bizarre creatures, and ghostly apparitions. In the depths of the creepy bog, they stumble upon a missing girl and horrifying evidence of toxic pollution. But somebody doesn't want them to escape. Who? Why? Can AJ and his Zombuddies work together to uncover the secret of the haunted bog? Will they come out alive?