"Fixed Meal Shop Fumi" is a popular diner run by a big-titted mama, Fujimi, who took over after her late husband's passing. Regular customers are drawn to both her and her daughter Kao, an F-cup mother-daughter duo. Always cheerful and friendly at work, Mama Fujimi secretly struggles with the massive debt left behind by her deceased husband. To delay payments, she's forced to use her huge breasts to appease angry suppliers. Meanwhile, loan sharks begin demanding titty fucks and blowjobs from her 18-year-old busty daughter. Eventually, the busty mama spreads her legs for a regular customer who says he wants to "help with her problems." Through these encounters, the family's hidden struggles and shocking truths come to light.