Jeong-mi visits Gusi apartment complex to conduct a survey on child welfare, where she meets siblings, Jun-hui and Jun-seo. They claim that their parents will be back soon, but they seem to be reciting memorized lines. Then, the two lead Jeong-mi to a bedroom and point at the floor where a manhole cover is embedded in the floor, underneath the yellow linoleum flooring. The children ask Jeong-mi to go down into the manhole.
Jeong-mi visits Gusi apartment complex to conduct a survey on child welfare, where she meets siblings, Jun-hui and Jun-seo. They claim that their parents will be back soon, but they seem to be reciting memorized lines. Then, the two lead Jeong-mi to a bedroom and point at the floor where a manhole cover is embedded in the floor, underneath the yellow linoleum flooring. The children ask Jeong-mi to go down into the manhole.