3119, there’s only one known civilization existing on Earth. The second generation after Pangaea Proxima is living at so-called peace under the Higher regime. Two people, who are both one of a kind, but are from different way of living will cross paths. Little did they know, their young journey starts there. Kim Minjoo, a commoner and Ahn Yujin, a warrior, what do you expect from two different people who has different perspective in life?

“I’ll only be passing here. There’s no reason to stay” Ahn Yujin woke up in a world that isn’t hers, to fulfill someone’s wish. There she met Kim Minjoo, and a taste of everything she wishes for herself. And then, the story begins to end.

The day after ZOZI, their last concert, Chaeyeon and Eunbi are the last one to move out of each dorm. What would they feel inside their home for 2 years and 6 months?

Three events are to be celebrated by Ahn Yujin and Kim Minjoo. As Yujin prepare all the things needed in this day, she's able to walk down the memory lane. While Minjoo waits in a place where they can only meet.