Tamara Granger, a high school girl who secretly working as a spy, is assigned to Paris, France, with her partner and boyfriend Cillian Harding, but she has found her true calling: being a spy. In her personal notebook, she records suspicious activity and notes her observations about almost everyone she meets. It seems harmless, until one day, someone finds the notebook and reveals Tamara's critical thoughts about her classmates. Suddenly, even her closest friends turn on her, and Tamara is determined to get revenge.