Third-grader Sofia wants to wear a beautiful dress to her cousin Rosario's quinceanera, but she will have to lose some weight by exercising and eating healthier foods, with help from her mother and sister.
Armando and his father are trash-pickers in Tijuana, Mexico, but when Senor David brings his "school," a blue tarp set down near the garbage dump, to their neighborhood, Armando's father decides that he must attend classes and learn.
On her first day at a new school, Adelita makes new friends through a lesson on vegetables, including how some vegetables are called cousins because they share certain characteristics.
