As we've seen, it looks like Autumn has come and everyone looks incredibly worried about it. It's obvious that everything going on has to do with the mysterious force Elsa is meant to battle, so does that mean the seasonal change is normal and everything else is falling into chaos, or is the change a symptom of the ensuing magical disaster?
Our theory is that there's something in the forest that's threatening everything in and around it. It's obviously something magical, though it could all be controlled by someone. Whatever it is, it can only be stopped with magic, specifically Elsa's magic. That's why Pabbie sends her on the quest to tap into her power and stop whatever is threatening their home.
