With her husband neglecting the family, Miki has been raising her daughter almost single-handedly. The only way she can release stress is to satisfy her need for approval by posting selfies of herself in a swimsuit on a secretly created SNS account. Miki becomes more and more daring as she enjoys being seen... But by chance, she is found by her daughter's boyfriend, Hiroyuki. Hiroyuki insists, "I want to see you in a swimsuit!" Miki is persuaded, and timidly changes into her swimsuit and shows him her plump body...