An expert gamer is forced to play a real-life version of his favorite game in a battle to the death!

In a hell called the Sanctuary...When his plan to escape the island ends in failure, Ryouta drags his battered body ashore, only to be approached by a mysterious girl who leads him to a community of seven combatants managing to peacefully co-exist. With Ryouta's arrival, though, the balance is shattered as the eight chips needed to win a ticket back to civilization are suddenly within reach! It doesn't take long before the first death is discovered, and so a brand-new arc commences with an explosive tropical murder mystery!!