Stella Diaz wants to be friends with the new boy in class, but sometimes she accidentally speaks Spanish instead of English and pronounces words wrong, which makes her turn roja. In addition, she has to get over her fear of speaking in front of the class.

When fifth-grader Stella Daiaz considers going to a different school than her closest friends, sees her big brother Nick receiving mail from colleges far away, and is forced to work on a project with her former bully, she suddenly realizes growing up is not quite as fun as she first thought.