When Class 1-A heads to the U.S. for an international field trip, their destination is a remote corner of Georgia — and the infamous school bus graveyard. What's supposed to be a cultural exchange turns into something else entirely when they meet Aiden, Tyler, Taylor, Logan, Ben, and Ashlyn, a group of locals who seem to know way more about the place than they're letting on. On their first night, both groups are dragged into the Phantom Realm — a dark, twisted mirror of the real world crawling with creatures that hunt by sound and movement. Now MHA's future heroes and the phantom fighters have to survive together, figure out how the realm works, and find a way back before the phantoms find them first.