In near-future Japan, Aya Okamura lives alone in an apartment, separated from her parents. Her mother has been working overseas since Aya was a child, leaving her aging father, Kouji, and their cat, Mii-san, as the only ones remaining in the family home. After an exhausting day, Aya turns down her father's dinner invitation by claiming she is still at work. However, that same night, she gets another call with sudden news that might bring this divided family closer together.