Infested! A Marshmot Halloween

It's almost Halloween in Marshmot! Of course, a weird place like Marshmot has a love for Halloween! What's everyone's plans?

You open as Bud "Oogie" Combstock, getting home from a long walk in the woods. But, then... He seems to go missing? Wait, and so did–... Why are townspeople going missing? That's not supposed to happen!