"Master's Sun" So Ji Sub becomes jealous after learning about Gong Hyo Jin and Seo In Gook's date.

August 28, the 7th episode of the SBS drama "Mater's Sun", featured Tae Gong Shil (Gong Hyo Jin) going on a date with Kang Woo (Seo In Guk). When she leaves, Joo Joong Won (So Ji Sub) is unable to fall asleep from being jealous.

Tae Gong Shil goes to a musical with Kang Woo on their date. When Joo Joong Won comes home, he says to himself, "There is no way they can watch the musical peacefully in the dark. Something is definitely going to pop out" trying to make himself feel better. However, Kim Gwi Do (Choi Jung Woo) says, "If there was a problem, you would have gotten a phone call. Looks like the date is going well seeing that it is quiet". Joo Joong Won finds himself unable to fall asleep that night and says to himself, "I'm over here unable to sleep even after I took medicine to calm my nerves but looks like somebody is out there being all lovey-dovey."

Joo Joong Won ends up calling Tae Gong Shil to ask about the summary of the musical. Tae Gong Shil is relieved to receive the phone call because she was still nervous after seeing the ghost earlier. Tae Gong Shil says, "You have no idea how scared I was but then you called me."

Joo Joong Won can't hide his happiness after hearing that a ghost ruined Tae Gong Shil's date.