'Monster - 2016' Jo Bo-ah becomes Seong Yoo-ri's direct boss

On the episode 9 of MBC's"Monster - 2016", Sin-yeong (Jo Bo-ah) and Soo-yeon (Seong Yoo-ri) came across each other for the first time.

When Sin-yeong and Soo-yeon encountered each other at a beauty shop, Sin-yeong mistook Soo-yeon as one of the employees at the beauty shop and treated her badly in the condescending way.

As Soo-yeon was offended by Sin-yeong's behavior, she used banmal not honorifics towards her although they did not know each other. Sin-yeong became angry and slapped Soo-yeon on the face. Soo-yeon locked the door and had a physical fight grabbing Sin-yeong's hair. Sin-yeong asked, "You are not the employee here?" and Soo-yeon said, "Does it matter? You aren't still allowed to slap anyone on the face".

Soo-yeon finally messed up with Sin-yeong's hair terribly and disappeared gallantly. Sin-yeong yelled at Gi-tan to find Soo-yeon and bring her over, Gi-tan pretended he heard nothing.

Sin-yeong later was transferred to Soo-yeon's team as a her direct boss. On Sin-yeong's first day in her new office, Soo-yeon recognized her new boss was Sin-yeong and she looked down at the ground. However, Sin-yeong also recognized Soo-yeon and yelled at her to come into her office. At the moment, Gi-tan came back from his work outside office and he also was called in by Sin-yeong.

Meanwhile, although Gwang-woo knew the products of Dodo Chemistry were carcinogen, he still used the products, which caused problems. Byeon Il-jae found out about this and set up a plan to drive Gwang-woo out of office.