Qiu Jia Ning is a scientist who worked abroad but when her professor steals her unfinished research and publishes it under his own name and instead of apologizing insults her, she quits her job and returns to China. She starts working at a pharmaceutical company called Plan O. She hides the fact that she has returned from her family and instead focuses on work where she has to deal with apathetic bosses and scheming coworkers. Along with her, another scientist is also hired. However, this man is actually a broker who has infiltrated the company to steal their research. The two strike up a fast friendship that Jianing's boss disapproves of. Zhou Xiao Shan finds out that Miss Su's team that includes Jianing will soon have a higher security level that means they can access more confidential files.