Lin Wan is the product manager of "Nebula Technology", a major Internet company. She has a sassy personality but has been repeatedly frustrated by projects where "Party A tortured me thousands of times". The iteration of the "workplace social APP" she was responsible for reached a deadlock, and the person contacted by Party A was actually the company's "Prince" Lu Chen - rumored to be the cold-faced King of Hell, but in fact he is a hidden "user experience controller". The two went from "exchanging requirements documents" to revising plans late at night. Lin Wan discovered that Lu Chen's ultimate pursuit of products coincided with her own, and Lu Chen was also moved by her stubbornness to "tell the truth with data." Under the dual pressure of workplace taboos (romantic relationships between superiors and subordinates) and project KPIs, Lin Wan used the "user growth curve" to prove that love is not an "invalid demand", and finally led the team to launch phenomenal functions. She also broke the estrangement with Lu Chen and officially announced her relationship at the "product launch conference", which became a workplace legend of "both career and love are online".