While the gang travel to Scotland to visit Daphne's cousin and witness the annual Highland Games, they find themselves terrorized by the legendary Loch Ness Monster.
As if the Penguin wasn't enough to contend with, a new vigilante has surfaced in Gotham City, and her strong-arm tactics give Batman cause for concern. Being the World's Greatest Detective and The Dark Knight, he sets out to uncover her identity while stopping a dangerous criminal plot.
When the Boogey Man causes Grim to lose his powers, rank, and title in the Underworld Court for misusing his powers, he plots to seek out Horror's Hand and take over the world. It's up to Billy, Mandy, Irwin, and Grim to get to Horror's Hand before the Boogey Man does.
