“Do you guys hear that?” Chaeri asked her friends looking around, then sees a shadow fade into a nearby alleyway.

  “Hear what unnie?” Hana asked looking at her friend and the leader of their very strange group.

  “Yeah...i didn't hear anything...” Jihan said looking around as well.

After everyone agrees that they saw nothing they head to Chaeri's house, where they were spending the last night of their summer before going to college. Unknown to all of them an unknown visitor would be showing up later at night.