A high school student, Hsiao-An Hsu, plays guitar for a band 'Go Go Punch'. Meanwhile, she also keeps an intimate relationship with the vocalist, Yi-Chun Chen. As Yi-Chun is being under lots of pressure in reality, they also come across an inevitable crisis in their ordinary daily lives. Facing those unknown emotions and her future with uncertainty during the youth time, Hsiao-An can only sing out loud.