In the first episode, Yuki is drawn into a mysterious online game after receiving an invitation that seems too good to be true. He meets the enigmatic leader of the group, learns the basic premise that players must survive by completing brutal challenges, and witnesses his first deadly encounter. The second episode deepens the lore as Yuki discovers that each round is governed by a set of rules written in an ancient script, and he must navigate alliances while fighting off ruthless competitors; a pivotal moment comes when he confronts the charismatic but dangerous player known as "S." Episode three escalates tension as Yuki forms a fragile partnership with a fellow survivor, and they uncover evidence that the game is orchestrated by an unseen mastermind. Their alliance is tested when a rival faction, called the Red Group, attempts to eliminate them. In episode four, Yuki confronts a shocking revelation about the true purpose of the game and faces a formidable opponent who threatens to expose his identity, forcing him to decide whether survival or truth matters more.
