Godric Gryffindor, Salazar Slytherin, Rowena Ravenclaw, Helga Hufflepuff, co-founders of Hogwarts. But who knew there was a founder of Hogwarts? History has erased her... The other side has reappeared, and the dead have been resurrected. Is this really just a coincidence? Why did the Quetzalcoatl appear again? What kind of unknown truth is hidden in the lost memory?