Heading to the next city, Ash & Co, stop off in a hotel for the night, but they soon find a mysterious person known as the Mystery Knuckle has appeared at a special jewel exhibition being held at the hotel. However, when all he does is open a jewel case, Ash & Co. are stumped as to what is going on, but before too long they are attacked by a mystery shadow. Will Ash & Co. find out what is happening?