Jennifer, Audrey and Denise, three friends, spend the evening together at a bar. They catch up after not meeting for weeks and have decided to plan a secret birthday party for their friend Marcia. However, each one of their boyfriend's call them during this process. Each one of them is convinced that they all have a 'girlfriend voice', to which they unknowingly change the pitch of their voice when speaking to their boyfriends on the phone. Do all the girls share the same high-pitched girlfriend voice? Or does one of them instead present a more intimidating and bossy mother-like voice?