Song Yunhui becomes the youngest deputy at Donghai Chemical, but his success creates personal and professional challenges. Lei Dongbao faces difficulties but perseveres with support from Wei Chunhong. Yang Xun navigates business setbacks and personal loss, with help from accountant Ren Xiayuan. Liang Sishen, a foreign manager, frequently interacts with Song Yunhui, and despite their differences, they come to respect each other’s abilities.