"Beep Beep" was released digitally on 2012. A short version of the music video was released on early April 2013. The full music video was released on December 10, 2013.
The video begins with all 9 members using telephones to call a certain someone. Sooyoung is seen standing up and putting her phone down, and the video moves to a pink box set with a big telephone behind them and the song starts. With the song being about a telephone call, the group also uses choreography that looks like them pressing telephone buttons at the chorus. Cartoon effects are also used in the music video. The music video ends with a male voice, saying "Hello?"