The Rising Volt Tacklers are visiting a beach in the Paldea region. Liko and Roy are having a great time playing with the local sea Pokémon, but trouble suddenly arises when Hogator gets washed out to sea! The day ends up getting saved by Irukaman, the Hero of the Sea! Roy is amazed at how cool Irukaman is… but just then, someone is lurking nearby, planning to catch Irukaman’s supposedly never-before-seen transformation scene on camera…?