Min-jae and Seo-yeon are no different from ordinary 17-year-old high school students. Min-jae is silent and sensitive, yet a good student. Seo-yeon who plays the piano wished to enter an arts high school but failed. As they grow into adults, their surroundings and the reality they face get harsher. These two somehow similar but different friends get closer as they overcome their growing pains together.

• Seo Jeong-yeon
• Park Si-eun
• Lee Hang-na
• Yoon Chan-young
• Baek Seung-hwan
• Kim Jong-tae
• Park Se-hyun
• Choi Dae-hoon