Stella Granger, a high school student who secretly works as a spy, is assigned to the United States, with her partner and boyfriend Charlie Swanson and her friends, Madelyn Mayfield and Myla Yumeko, but has found her true calling: being a spy. In her personal notebook, she records suspicious activity and writes down her observations about almost everyone she meets. It seems harmless, until one day someone finds the notebook and reveals Stella's critical thoughts about her colleagues. Suddenly, even her closest friends turn against her and Stella is determined to get revenge.
