In modern-day New York, 15-year-old Alex Sullivan is walking home from school, just like any other day, when suddenly he finds himself swept up in a powerful vortex and transported to the land of Arendelle. Confused, disoriented, and unsure of where he was or how he had ended up there, Alex manages to find his way and fit in nonetheless. But as he scrambles to find a way to return to his world, a force secretly emerges, threatening his bid to return home as well as all of Arendelle itself.