A new Character (or what appears to be) joins the Throne Room where John has watched the 24 elders and the four Living Ones fill the Holy of Holies with worship. It seems that He is the only One able to open this mysteriously sealed book. A book which has similarities to a few other "books" in ancient, Biblical times. What's in the book? And more importantly, what makes this "new" Character the only One worthy to open the book?