The series follows the adventures of Berti Benavente, a 5-year-old girl who starts kindergarten and discovers the highs and lows of school, along with her classmates and teacher Ms. Moreno. Each episode is presented in the style of a Broadway musical, with the kids singing and dancing as they learn new things. One song per episode features a shift from CGI to 2D Flash animation, featuring a music video based on what Berti and the kids learned.