Dian Hangping (Hiroshi Abe) used to be a researcher at the Space Development Agency, and now he runs the factory left by his father in Shimmachi. Although my life and my adolescent daughter Li Cai (Tao Tsuchiya) often have some frictions, the factory operation is smooth and the performance is steadily improved. However, Hangping, who never gave up his dream, spent a lot of energy on developing rocket engines, which led to some decline in factory performance. One day, a big customer, Jingbang Machinery, suddenly announced that it would suspend the transaction with the factory. In order to ensure the working capital, Hangping, who lost a big customer and suffered from poor capital turnover, went to Baishui Bank, which has the most frequent contacts with Diancun, Minister of Finance. The bank said that it would be difficult to raise funds if it insisted on developing hydrogen engines with little practical hope. Hangping, which was helpless because of financing obstruction, was sued by its competitor Nakajima Industry on the grounds of patent infringement. Although the tenant production house is innocent, it is still discredited, and bank financing is even more hopeless. Nakajima Industries, which intends to acquire the technology of tenancy production, adopted a protracted war, extended the trial time and tried to drag down Hangping. At this time, Imperial Heavy Industries, a famous Japanese company, proposed to acquire the patents owned by Hangping with 2 billion yuan. For the heavily indebted, life-and-death tenant production house, this money is tantamount to life-saving money, but the patent contains the dream of Hangping. As an operator and a president who is responsible to the staff, Hangping faces a difficult choice.