Megumi lives with her beloved husband, Mitsuo, father-in-law, Masutaka, and brother-in-law, Koji. Mitsuo was always concerned not only with Megumi but also with Masutaka, who lives on a pension, and Koji, who is job hunting, and was an absolute presence in the Yuki family. One day, Mitsuo disappears. Even though I waited, the good news did not arrive, and the Yuki family became dark as if they had lost the sun. Eka, who couldn't see the situation of Masutaka's disappearance, vows that she must protect this house until her husband returns.