A pregnant woman's sketches on a seemingly innocuous blog conceal a chilling warning. A child's picture of his home contains a dark secret message. A sketch made by a murder victim in his final moments leads an amateur sleuth down a rabbit hole that will reveal a horrifying reality. Structured around these nine childlike drawings, each holding a disturbing clue, mystery horror YouTube sensation Uketsu invites readers to piece together the mystery behind each and the over-arching backstory that connects them all.