Donald Duck #30/1967

In the sun-drenched hills of Lower Bahvia, a trio of young Woodchucks—Kwik, Kwek, and Kwak—along with their ever-grumpy guardian Donald Duck, arrive on a camping adventure. But their vacation quickly turns uneasy when they learn of the local terror: a monstrous, winged reptile known only as "Het onding," said to stalk the high pastures and steal sheep under the cover of night.

When Scrooge Duck unveils his new vault, only the tune of "My Bonnie Lies Over the Ocean" played on a fife can open it—so he ventures to the Cathedral of Notre Duck to hide the fife in the wishing fountain. But when he pulls it back up, the fife is gone, and a mysterious black-clad figure is playing the same tune. Donald, Kwik, Kwek, Kwak, and Oom Dagobert Duck follow the thief through the cathedral’s shadowed halls, only to find themselves cornered—trapped in a labyrinth of secrets and echoes.