A scandalous rumor about an up-and-coming actress is included as a gossip item in a stock market tipsheet and propagated by the tabloids, causing her to take her own life. Woo Gon (Kim Kang-woo), the actress’s long-time devoted manager who dedicated everything to building her career, initiates avengeful investigation to expose the sources of the malicious rumor. With unexpected assistance from a tabloid distributor Mr. Park (Jeong Jin-yeong) and a legendary wiretapper Baek Moon (Ko Chang-seok), Woo unravels the opaque and lucrative world of secret tips and salacious rumors.