Umji and Yerin go to the mysterious Milky Way to make their wish come true

prolog

황은비

Jeong Eun-bi!!!!!

황은비

Where are you!!

황은비

Eunbi unnie!!..Jung Eunbi...

황은비

Please...come back

Fur stone

황은비

Oh no...

김소정

Eunbi!!

황은비

Sister...me

황은비

Eunbi unnie...

정은비

Hwang Eun-bi!!

황은비

Uh... Sister?

The time we spent together

Are you coming back now?