Dangerous Fairies. A Magical Snow Globe. Discover the Adventures of the Celtic Kids. Caitlin and Sean O'Brien's next adventure leads them to an ancient treasure rath. With the help of a magic fairy key, they unlock a charmed door in hopes of revealing its hidden secrets. The twins prepare to raid the rath with the help of their Kelpie companion and new pixie pal. But once inside, what will they find? Treasure? A dragon? Or a new unexpected turn in their Fay Seekers' quest?