Little Monsters trailer still

Altitude Films/YouTube

A field trip goes badly wrong in the upcoming comedy horror flick "Little Monsters."

Altitude Films unveiled a red-band trailer Wednesday, and it shows Lupita Nyong'o as Miss Caroline, a kindergarten teacher who has to keep her students safe after a zombie outbreak. She's joined by Dave (Alexander England), a washed-up musician who volunteered to chaperone the field trip to try to get close to her. Meanwhile, they end up in the terrifying situation with a famous kids' TV personality, Teddy McGiggle (Josh Gad), who doesn't seem to actually enjoy children, based on what we've seen so far.

The trailer shows the danger of the zombies and how Miss Caroline does her best to hide it from the kids. At one point, when she's covered with blood, she tries to tell them she got in the middle of a jam fight. Watch below, and know that the trailer is NSFW because of language and gore.

"Little Monsters" made its debut at the 2019 Sundance Film Festival and will hit theaters in the UK and Ireland on Nov. 15. Its U.S. release date hasn't yet been announced.