Zhang Guangzheng (Huang Xuan), a concierge at a five-star hotel, is kind and loyal, and values friendship and righteousness. His inner sense of justice, morality, and courage to move forward are hidden under the surface of muddling through. The stewardess Zheng Youen (Bai Baihe) is sassy, straightforward, sharp and free-spirited. She looks arrogant and thorny on the outside, but she is warm and soft on the inside. The two people who are both engaged in the service industry accidentally broke into each other's lives. Zhang Guangzheng fell in love with Zheng Youen at first sight. In order to get close to Zheng Youen, he joined the square dance team where Youen's mother was. The daily interactions broke his stereotype of the "disturbing" square dance aunts. Zhang Guangzheng led the aunts to participate in square dance competitions and strived to be the first. The aunts who once had their prime years encouraged Zhang Guangzheng to face life with vigor. Zhang Guangzheng and Zheng Youen are one thing over another, and their sincerity is exchanged for sincerity. The development of their relationship is always unexpected, but reasonable. The two influence and give to each other, making many changes that they had never thought of or even dared to think of before, and regaining their confidence and pursuit in their careers and lives. Life is never easy. They and their friends have all been discouraged, but in the end they all chose to overcome all obstacles and go all out. Wang Niulang (played by Zhu Yuchen) mustered up the courage to face his inner feelings, Chen Jingdian (played by Bai Yufan) was no longer afraid of failure and overcame his mental knot to work hard to prepare for the postgraduate entrance examination, Tong Nana (played by Chai Biyun) gradually found her confidence and herself, Douzi (played by Xue Haojing) actively and hard worked for every opportunity to move forward... In this huge city, these ordinary yet brilliant people are constantly working hard to become heroes in their own lives.