Bill logra ver el futuro en que falla y es eliminado tras caer en la trampa de Stanley y Stanford, por lo que tiene que idear un nuevo plan con tal de dominar el mundo, hacer lo que quiera, pero para eso necesitará mucha paciencia y para todo eso principalmente necesita infiltrarse entre la familia Pines. Si no te has viso la serie por completo, el principio será un spoiler para ti, quedas advertida(o).

Twenty year-old Dipper Pines has returned to Gravity Falls. No Stan, no Ford, no Mabel. Just Dipper, Wendy, and Soos to take care of the Mystery Shack. One day, Dipper gets an ominous warning: a deadly assassin had been set upon him. Now Dipper must turn to the only one who can fight such a demon: a demon. Bill promises to protect Dipper, but who can trust a demon? My first BillDip story! Thanks to ShiningInsanity for giving me the idea while reading her BillDip stories. Time to get our OTP on! All Gravity Fall characters do not belong to me. All other characters do. Please don't use them without my permission. Also I use a bunch of scenes from other BillDip books, so keep an eye out for them!