Like the Japanese with their Godzilla movies, the Koreans are partial to a bit of post-apocalyptic social satire, and Um Tae-Hwa’s box office hit Concrete Utopia follows a path trailblazed in 2013 by Bong Joon-ho’s cult sci-fi Snowpiercer. Adapted from the popular webtoon Pleasant Outcast by Kim Soong Nyung and partly inspired by British writer J.G. Ballard’s 1975 novel High-Rise, it centers on a Korean apartment block whose residents become lawless after a terrifying earthquake rips through the country.