(Famous Narrator P.O.V.
It's a new summer and since the last 4 summers with Grunkle Stan and Ford. Dipper has now gotten the chance to know everything about the mysteries of Gravity Falls and he finally defeated Bill once and for all.
But when he did he had a giant chill like he could still feel his presence, even though they saw him go into the gateway to the nightmare realm and was trapped for ever...
Interesting one might say?
(Cue Gravity Falls Intro)