The homeroom class gets sucked through a wormhole into - you guessed it! - another world where they encounter a desolate environment dominated by a rampaging magical automaton. There they meet a girl-type golem with mannerisms similar to Megumin, a woman dressed in the same military uniform as Tanya, and a man with a cane who seems to know Subaru, and hijinks ensue. (Source: Crunchyroll)
Watch Isekai Quartet The Movie: Another World online — subbed and dubbed, with automatic AniList / MyAnimeList progress sync.