War broke out in South Korea,

Two people promised each other that they'll have a happy life together.

Jonghyun's version of having this life.. was ending the war.

Luna's version is just to stay together and hope for the best.

What happenes to Jonghyun who suddenly leaves?

What of their relationship?

What will Luna do to reach him

and say those few words that she intended him to hear

but he was the only one who didn't?

What's going to happen?