Timequake// The Big Five

After an incident that takes the lives of 10 Arendellian people, Elsa is distraught, and when she goes to sleep at night, an earthquake occurs which turns out to be a time anomaly in which portal have opened and different versions of characters come through.

All of them have experienced the same thing, a merging of worlds, and an attack from which they have to band together to stop.

{Extended Plot in book}