Eight months have passed since Hop Morada and Rayne Senri completed their main Dual Hero journeys. With Rayne learning about the leagues, and Hop enrolled at Wyndon University, the two heroes have started a peaceful routine as they work towards their own future careers. However, a Dual Hero's job is never done. Just as the next Galar League starts, Hop's Alolan History class takes a trip to Alola to learn about the region in-person for the month, but walk in on a crisis no one was prepared for. Ultra Beasts start infiltrating the region after their leader crashed into Alola, dead, with a mysterious team known as the Ultra Recon Squad trying to contain them. With vague visions leading him on, Hop goes through Alola with four of his classmates, trying to hide the fact he's a Dual Hero to keep everyone out of trouble during their trip while trying to figure out what's going on in Alola without his partner, only to realize the problem he walked in on is bigger than anyone could've imagined.