永远的“6时59分”开始了—— 在佑河家有着代代相传的止界术使用止界术,能够进入森罗万象尽数停止的“止界”。某天,主人公树里的外甥和哥哥,被诱拐犯绑架了。她为了救出他们而不得已使用了“止界术”,却遭到不应存在于那里的、除自己以外的“会动的”人类袭击。他们是尊崇止界术的“真纯实爱会”。围绕着使用止界术时所必需的“石头”,止界之谜、佑河家之谜逐渐浮出水面……Having failed 19 job interviews in one day, Juri Yukawa's dreams of moving out of her parents' home are utterly dashed. Stuck living with her working mother Nobuko, NEET brother Tsubasa, laid-off father Takafumi, and single-parent sister Sanae, the only hope for this family to raise a decent adult is her little cousin Makoto. However, this struggling family's life takes a turn for the worse when Makoto and Tsubasa are violently kidnapped by a mysterious organization and held for ransom. With only 30 minutes to deliver five million yen to the criminals, Juri's grandfather reveals a dangerously powerful secret to her and Takafumi.