Childhood sweethearts, sweet romance, fast-paced. Yu Shijin and Yu Huan grew up together, sharing every chaotic moment of childhood. As they entered their first flush of love, they secretly fell for each other. Outspoken Yu Shijin was unexpectedly shy when it came to love. For twelve whole years, he loved Yu Huan, whose warmth and adventurous spirit made her completely different in her approach to life, school, and work. On the night of their high school graduation party, Yu Shijin planned to confess to her, but Yu Huan never showed up. Years later, they meet again. Each has worked hard for the other's dream, and both hope the other will see them standing at their peak.