It Appears We've Grown

Its been 9 years since the events of weirdmageddon took place at Gravity Falls. Dipper is now 22 and has been missing for over 4 years. Mabel has just gotten out of collage for design school and starting her own business. The only word shes heard from Mason Pines was a small letter before the all the letters ceased to a stop. As the questions of why Dipper left linger in the air an old acquaintance makes an appearance leaving everyone on edge.