Sofia loves her older cousin, Rosario, and she's always excited to receive her hand-me-down clothes. This time, the box of clothes comes with a pink envelope: an invitation to Rosario's quinceanera. And as she digs through the box of clothes, a beautiful purple dress catches her eye. It will be perfect for the quince! But when Sofia tries on the dress, her younger sister Mari giggles and tells her she looks like a purple sausage. Sofia and her mom make a pact to change their habits; they agree to help each other eat healthier and get more exercise. The next morning, the girls are surprised when their mother says they're going to walk to school instead of driving. And after walking home in the hot afternoon sun, they drink water instead of soft drinks.
