Sunny is a girl full of dreams together with her dreams are her friends Taeyeon, the oldest, Seohyun, the youngest, Hyoyeon, and Jessica. Sunny wanted to join the military because it is her dream since she was young, she was so tough she always takes all the challenges given to her she does not give up easily. Taeyeon wanted to join the military because she wanted to accompany Sunny and it was her dad who wanted her to go to the military but she started to like it in the military. Seohyun joined in a military a few years ago but she did not completed it because she had an accident so when she heard her friends are going to the military she decided to join together with them. Hyoyeon, she is the sporty queen of the 5 she is also tough as Sunny it was also her dream to join the military. Jessica joined the team to tell that even girly type like her has strengths, while showing her strengths she bumps into a guy who she fell for at the end.