When Lupita Nyong’o tells a bunch of kindergartners, “One, two, three, eyes on me,” viewers of “Little Monsters” jolt to attention, too. The charismatic Nyong’o is easily the best part of this feeble Australian horror comedy, arriving Friday to Hulu, as Miss Caroline, a Taylor Swift-crooning, ukulele-strumming teacher who turns fierce when her class is attacked by zombies while on a field trip to a petting farm.

Unfortunately, the film’s nominal lead is Dave ( Alexander England ), a rude, selfish would-be rocker whom the writer-director Abe Forsythe sets on a collision course with utterly predictable redemption: Crushing on a dedicated educator and battling ravenous corpses will do that to the most terminally irritating man-child.

When zombies — spawned by an experiment gone wrong at a nearby American military outpost — descend on the koalas and the sheep and the kids, Dave, who tagged along as a chaperone, initially sputters. Faring even worse is Teddy McGiggle ( Josh Gad ), a superstar children’s entertainer who just happened to be shooting his show at Pleasant Valley Farm. While he reveals himself to be a foul-mouthed mega-jerk, he also lands the film’s single best line, so he is almost (almost) forgiven.