This is a story about the young Pines twins, who were tragically changed along with the rest of the town, when they were caught in Bill's world, his magical, evil, party; when they were tainted with his back magic and so on. The black magic caused everyone who was infected to gradually become a monster. The twins found out when they were at home, with parents whom hate monsters. Once their parents found out, they shipped the twins straight back to their Grunkles where they found the answers to their question, how?