The head of the Yuuki household is Emika, living with her husband Mitsuo, father-in-law Masataka, and brother-in-law Koji. Mitsuo was a devoted family man and an unwavering presence at home. Then one day, he suddenly vanishes, leaving the family engulfed in anxiety and chaos. As Masataka falls into despair and Koji grows restless, Emika resolves to protect the household until her husband returns. Lighting up the darkened home, she rises with newfound hope in her heart.