Two men and women from the same city graduated from junior high school and came to another city to continue their high school education for different reasons. From two strangers to becoming good friends, she changed for him and he sacrificed for her. But neither of them noticed this change. In high school life, time really flies by. Everyone was fighting for their senior year in high school and college, and there was another turmoil between them. As the saying goes, one wave comes after another. Will they be able to pass the university successfully? What choice will they make next? Will they be together smoothly?