Yo Soy Tu Niña tells the story of Flor Ochoa, a 15-years old growing up in Southern California and living in a very traditional Latino home. As the youngest of three daughters, Flor is given unrealistic expectations from her father - an overworked landscaper named Jesús who wants Flor to grow up and be like her older sisters and be "married in white." At the same time, Tony, Flor's older boyfriend is pressuring her to have sex with him. To get Flor's attention, Tony sends Flor an inappropriate text of himself and Flor's dad finds her cell phone and sees Tony's picture. As the tension increases in the Ocha home, Flor feels more and more pressure from Tony to go away and be with him. At the same time, Jésus Ochoa is having problems with his landscaping business and takes out his frustrations with his workers. The situation boils over when Flor runs away and Flor's family rallying around Flor's mom as they wait for Flor to come back home.