Frozen: The Hero's Return

A high-stakes confrontation with his evil twin, Albedo, takes a bizarre and unexpected turn for Ben Tennyson. Ripped from his reality by a malfunctioning device, he finds himself in a magical kingdom, just as a young queen's coronation goes terribly wrong, unleashing an eternal winter upon the land.

A queen's power will be revealed. A sister's love will be tested. And a hero from a forgotten past will return. When a rift between worlds throws Ben with a universe on his wrist back into the snowbound kingdom he once knew, he finds himself at the heart of a magical storm. He was their friend once, but now, as darkness and ice threaten to consume everything, he must discover if his return is a prophecy of hope or the final piece of a devastating curse.

The story follows mainly the plot of FROZEN.

P.S Ben was friends with Elsa and Anna even before the events of FROZEN. I'll make a prequel to this story so that this story will somehow make sense to you.