I think about you... With regret, I miss you. Did we mean the words we said that day?

Three friends, Sung Ra, Byul Seul and Yoon Hyun go on a family trip together to Korea after the long begging that had to do. There, their family decides to rent a condominium since they would be there for a month or two. As the three decides to explore the beautiful city of Seoul, they get caught in the middle of a teenage gangster fight.

They're no threat to the world unless they have to be. They were humans who are given the second chance to be alive again. But... What if they have a reason to be revived? What if they just ment to sacrifice of the sake of everyone's lives?

The Keepers of the Gates of the 3 groups of the newest and most famous companies. What happens when the 3 collides? What will go wrong?

You have been invited to your old friend's school fair. There.. You see HIM...