Frog gods from beneath the sea . . . possessed robot toys . . . giant clown creatures . . . colossal rat monsters . . . gargantuan vampire bats from outer space . . . titanic stone goats: Martin Magus and MegaGhost have faced all kinds of freakish foes to keep Dunwich Heights safe from supernatural kaiju. But these battles were just a warm-up, the beginning of a diabolical scheme orchestrated by the sinister Ultraghoul and the eldritch fiends known as the Nethergods! Convinced that the worldwide upheaval of evil in the present has a link to the distant past, a group of the world's greatest occultists enlists Martin to take a wild ride through time and space, where in order to save the future, he must uncover the arcane origins of Megaghost!

Series finale!