But perhaps the second season trip will certainly be a lot more difficult because the two girls will have to go to discover the truth of Elsa’s power. Where did they all come from? Why did she choose them? And beyond that whether she really controlled their power or not? If the explanation in the Frozen 2 trailer is correct, it seems that the only way to know that is to find Elsa and Anna’s parents – who may still be out there after all. year.