In the story, a mother struggles to provide for her daughter, Isabella, on her birthday. When Isabella asks for a hot dog, the mother regrets that they can only afford groceries. At a vendor, the mother attempts to buy a hot dog using WIC, but the vendor refuses, insisting on cash only. Despite her best efforts, she can't get the hot dog for Isabella, promising to make her something to eat at home instead. Another person nearby expresses sympathy and offers congratulations, highlighting the challenges they all face. The story captures themes of poverty, sacrifice, and the struggle to provide for loved ones.