Ding-Dong! The doorbell rings, making Yanggaeng bark loudly. "Who's that?" Seollin is alone at home with Yanggaeng while Yoseob is out for practice for HIGHLIGHT's comeback. Looking at the door via the camera, there is no one outside. As she slowly opens the door, Seollin sees a parcel with a note to her and freezes. Somehow she is getting a bad feeling about this. "Should I open it now or should I wait for Yoseob to come back?" She thought to herself.

After thinking through for a while, Seollin musters her courage to unwrap the parcel while Yanggaeng snuggles close to her, as if trying to protect her. As she opens the parcel, she sees many photos of herself not looking directly at the camera. It was like someone taking her photos secretly. Goosebumps form as she goes through the stack of photos of herself - at the entrance of her company, at the supermarket, at the carpark, at the park and lastly at the lift lobby of her apartment. There is a letter written with red ink again.

"How dare you report my previous present to you to the police? You think they can protect you? I know you more than you can ever imagine. Watch your back..." Seollin read the letter with trembling hands. After finishing the letter, she throws it back into the box and hugs her legs close to her chest. Yanggaeng hops into her arms and her hands as though comforting her. "Yanggaeng ah, what should I do? Somebody is out to get me but I really got no idea who he or she is.." Seollin hugs Yanggaeng close to her. "Yoseob is not back yet, I'm scared.." Although they have yet to confess their feelings for each other, Seollin has been depending on Yoseob more each day.

Just then, the door beeps open after someone presses the door code. Yoseob walks into the apartment with a puzzled expression as he sees Seollin sitting at the corner of the couch with a pale face. "Yoseob ah.." Seollin looks at him with tears in her eyes. Yoseob quickly walks towards her and sits close to her. "What's the matter? What's all these?" He frowns in worry as he glances at the parcel contents. After looking through the contents, Yoseob takes Seollin's trembling hands into his and holds them tightly.

"When did you receive this? Do you have any idea who is behind all these? We have not hear anything from the police yet. Seems like this person has something against you and knows you quite well. Hey...Dont cry, I'm here..It's ok..." Seollin's tears flow down her cheeks as she shakes her head in reply to Yoseob's questions. Yoseob pulls her into his arms and rocks her slightly while he pats her head. "Yah...I think you scared Yanggaeng, he's hiding at the corner now." Yoseob tries to joke to make Seollin feel bette