Arisu Ryohei and Usagi Yuzuha have been pursuing the mystery of “borderland”, risking their lives in games in order to survive and return to their world. The two of them encounter friends, foes and the mastermind who controls the game at a location believed to be the key to unravelling the mystery. They have collected the numbered cards each time they won a game. All that remains are the jack, queen and king cards. The games they face this round will be of greater difficulty than the ones that came before.