In 1991, five kids told parents they'd catch frogs on a mountain nearby. They vanished, the case became known in Korea as the "frog children disappearance."
The film is based on a true case from the early 1990s that is known among Koreans as the "disappearance of the frog children." In 1991, five elementary school students told their parents that they were going to hang out on a nearby mountain to catch frogs. They went missing.—Stanislav S, Sochi, Russia