A young woman named Miku suddenly appears before Kakei, a disillusioned middle-aged man. She's his daughter from his previous marriage, and their cohabitation begins, but to the troubled man, the suddenly appearing daughter is nothing more than a source of monthly gambling money. Amidst these rough days, debt collector Okabe comes to collect. Suspicious of Kakei living with a young woman, Okabe is surprised by Kakei's proposal...