Episode 9

 (Korean: 6g의 대가, lit. "6g's Price") aired on July 12, 2019.

Synopsis
Tae-jun struggles with the ramifications of Seong-min's decision. Do-gyeong has information that may help Tae-jun. Won-sik grows suspicious of Hye-won.

Cast

 * Lee Jung-jae as Jang Tae-joon
 * Shin Min Ah as Kang Seon-yeong