1) Watch Hollow
Deep within the enchanted woods in the town of Watch Hollow stands the once-grand Blackford House, whose halls hold a magical secret: a giant cuckoo clock that does much more than tell time. But when the clock's gears cease to turn, an evil presence lurking among the trees begins to come out of the shadows. When Lucy and Oliver Tinker arrive in Watch Hollow, they have no idea that anything is wrong. A mysterious stranger has made their father an offer...
With evil Prince Nightshade hot on their trail, Alastair Grim and his apprentice Grubb and the rest of the crew of the unique mechanical/magical apparatus known as the Odditorium embark on a perilous underwater adventure to the otherworldly realm of Avalon, to find the legendary sword Excalibur, the only weapon capable of penetrating the prince's magical suit of armor.
In Victorian England, Grubb, an orphan about twelve years old, escapes his life of drudgery as a chimney sweep's apprentice and finds himself in a very strange house filled with magical objects and creatures, but soon he learns that there are dark forces seeking his new master.