Excaliber has been discovered, by Muggle archaeologists. Morgana Pendragon has caused the Once and Future King to rise. Merlin has been called to help a boy named Harry Potter defeat a wizard who is harming the world. And the Great Dragon is used for a tournament where he is believed to be a feeble-minded wyvern (also available on Wattpad).

It's been 1500 years and Merlin is still watching and waiting for his king to return never getting involved, but when there is a massive spike in his magic, can he just lurk in the shadows any longer? Merlin becomes the new defence against the dark arts teacher at Hogwarts under the name of Mryddin Emrys join him as he seeks to protect the old world and the new.