Lee Dae-sung was an ordinary office worker. No, it would be wrong to say that. He was much less than that.

Trying to support his family that had broken apart many years ago, he had sacrificed any attempt to soothe his own feelings and focused on earning the little he could manage.

But one day, the pain finally caught up to him. He ended everything.

But the end was just a prologue; he was to begin again and this time, he promised himself one thing: he will live only for himself.

And so his journey would begin, and he will fight against his greatest enemy- himself.