![](https://occ-0-2219-988.1.nflxso.net/dnm/api/v6/evlCitJPPCVCry0BZlEFb5-QjKc/AAAABbe27QoJCh7CUCwTCZ2VQHKsk4yXzgmkF0c4FqONGC4bL7mFtHqNh0_4wVIHmLdz2b0n2op8niMpJBPgWLrauIq_cF0Q.jpg?r=945)
A plucky student stumbles upon the secret life of young monsters who come out to learn and play when night falls at her elementary school.
Um Sang-hyun,
Lee Jae-beom,
Kim Mi-ae,
Gang Gyuri,
Kim Hyun-ji,
Hong Bum-ki,
Seo Yeon-bi
Added on Netflix 2021-12-28.