This series is composed of several horror mystery stories. In each story, players need to complete an online escape room through a chat software, finding clues and solving various puzzles through conversation, to escape the predicament and ultimate danger. The game features an AI "God's Eye", several trapped players with different backgrounds, a device that can only be used for group chat, and the sudden appearance of the monster Wendigo, with clues to escape only obtained by solving riddles. It is a test of humanity, intelligence, and courage.