
The episode begins with the protagonist, David Jung, at a karaoke bar. His cheerful demeanor shifts as he leaves to disrupt an intelligence operation.
Inside the karaoke bar, David and his companions are drinking. One character compliments another's singing voice before they all share a toast.
Disguised as a pregnant woman, undercover agent Rebecca escapes through a hotel after assassinating the Russian ambassador. His bodyguards are in pursuit, searching for her.
David fight scene in karoake room.
David arrives in Incheon. He enters a restaurant and speaks to Yong Shik Choi.Music plays in the background.
Rebecca has sex with Atwood during an interior scene. The track plays from a speaker system. Rebecca wears a black bra.
The Butterfly music scores a kitchen scene. David prepares a meal. He wears a black top.
The Butterfly soundtrack song scores the opening sequence. A male grocery store employee stocks shelves. The track fades as David and Rebecca enter the building.
A cityscape shot begins. The Butterfly soundtrack song continues as David navigates Jagalchi Market. He tries to contact Yong Shik Choi.
David plants a bug during an office scene. The Butterfly soundtrack song plays from a speaker system. Rebecca quickly turns off the music.
A spa sequence begins. Senator Dawson groans during a massage. The track fades as he receives a visit from David.
David and Rebecca enter an art studio. The music continues during a transition sequence. David and Rebecca cook food together.
Song blasting from car speakers.
A travel sequence continues. David changes the radio station again. Rebecca stops the song.
A travel sequence continues. Rebecca changes the radio station. She says, “There, that’s good.”