Jieum hears the news that Seungjo, whom she has harbor-longingly crushed on since high school, has a girlfriend.
Wanting to pour out her wounded heart somewhere, she stumbles upon a chatting app called , where she meets 'Jemulpo Puppy' and has a brief escape from reality.
Then, after winter break, she returns to school for the new semester.
'Wait, wait a minute. Why is that person here?!'
There, she comes face to face with 'Jemulpo Puppy', whom she thought she would never see again...
"Found you, little pebble."
