The protagonist of the story is a beautiful high school girl named Goto Kirie. The story begins when her boyfriend, Saito Shuichi, returns from the school in the nearby town to Kurowhirlpool Town where they live.Shuichi looked haggard because his father suddenly started acting strangely.After that, all kinds of strange things began to happen to everyone and everything in the town.The curse of the whirlpool spreads throughout the Black Whirlpool Town, but Xiuyi, who is mentally haggard, insists on protecting his kind and beautiful girlfriend.Tonge witnessed everything from beginning to end with her own eyes. When she and Xiuyi finally survived to the end and became the only normal people in the town, what did they see?