Yoonjae leads an empty life after his wife and daughter are brutally murdered. One day, his journal reveals one mysterious sentence: "You can see them again." Yoonjae is pulled into a parallel universe where everyone is a player in a lethal game, and the final survivor will be granted any wish. Desperate to be reunited with his family, will Yoonjae succeed in fighting his way in this hellish world to be the last one standing?