Yuto Yuria will live with her new father due to her mother's remarriage. Each of them had a secret job of customs, but one day, my father-in-law didn't know that and called them in a 3P course. Two people who look down on customs even though they have a mother. Meanwhile, due to the recession, Yu gets fired from customs. Yu, who is not earning enough, uses his father-in-law's love of customs and asks him to make full use of the erotic technology he has cultivated. And to compete with Yuria who witnessed the sex of the two.