Lin Yan, a top advertising planner, and Zhou Muzhi, the brand manager of Party A, met on a narrow road because of a multi-million dollar project. At the International Advertising Festival five years ago, Lin Yan once ridiculed that "data people cannot produce good ideas." Zhou Muzhi was the young man who was persuaded to return to the country by her words. When they reunited, the two were tit-for-tat, with creative intuition and data rationality clashing head-on. However, under the pressure of Party A's internal factional strife and the multi-million dollar project hanging on a thread, the enemies were forced to join forces. From the all-night quarrels over changing plans to Zhang Ming's secret support, they saw through each other's softest cores under each other's hardest shells while fighting side by side. When high-paying poaching, crisis of public opinion, and wounds from the past hit one after another, the two made repeated choices between career red lines and rising emotions. In the end, they both gave up everything they had and jointly founded the "Party A and Party B Creative Lab". In the gap between business and ideals, they found their own "middle line" - creativity has the bones of data, and data has the breath of temperature.