A story of love and friendship between five high school students from Seoyeon High School. Lee Ha-min appears like a bright person, but there is also darkness within his mind. Han So-mang is a warm-hearted person, but she is also quite timid. Lee Jae-min is a popular student with a painful past, but he is kind to everyone around him. Yoon Bo-mi is a sweet, model student. Choi Jin-young loves playing games, and although he may seem unfriendly, he has a gentle personality.