Fred Weasley took out the Marauder's Map. "I solemnly swear I am up to no good." He pledges. The words 'Moony, Wormtail, Padfoot, and Prongs proudly present: The Marauder's Map.' Show up. But something's different. "Moonsong? Who's that?" George asked, looking over Fred's shoulder. READ TO FIND OUT WHO MOONSONG IS!! (Has some modern references though it is set in Marauder's era)