A story of two sisters, the older being more traditional, the younger a "moga" ("modern girl"). Their widowed father runs the family sake shop, but is running into financial trouble, causing him to tamper with his stock; Meanwhile, his long-time mistress yearns for something more serious. Amidst this, the older sister is introduced to a well-off suitor: A university boy, much more intrigued by the less traditional little sister. A doddering grandfather, an officious uncle and busybody neighbors also don't make the lives of the hardworking members of the family any easier.