川崎的乙醚工厂发生爆炸，看似无一幸免的爆炸事故，竟真的有幸存者出现，而且是离工厂最近的一家六口。这家人的异常引起了超人课的注意，大家怀疑那家人的真实身份全是超人。兵马对这家人的情况有所了解，原本是七口之家的神秘家庭少了一人，这个人现在究竟在哪里？他们的超能力又是什么？

古美術商店「もりの屋」で暮らす専業主婦の畑山サナエたち６人家族。

彼女の夫・稔はアメリカとの開戦時に日本人捕虜第１号となり、未帰還のまま30年近くが過ぎていた。

平凡にも見える畑山家だが、近所の化学工場で発生した大災害の中を生きぬき、時を超えて幾度となく同じ家族構成で目撃されるなど、不死超人の疑いがかけられていた。

超人課が目をつけ風郎太たちが内偵を進めたとき、サナエに稔からの帰還連絡が入ってきた。

Housewife Sanae Hatakeyama and her family of six live in the antique shop "Mori-no-ya." Her husband Minoru was the first Japanese prisoner when war broke out with the U.S., and close to 30 years had passed without his return. The seemingly ordinary Hatakeyama family had survived a great disaster that occurred at a nearby chemical plant, and had also been witnessed several times over the years with the exact same family members. Therefore, there were suspicions that they were immortal superhumans. After the Superhuman Bureau gets curious about the family, Fuurouta and the others start on a secret investigation. But then, Sanae receives word that Minoru is returning.