Lee Dae-sung was an ordinary office worker, 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.

The end was only the beginning. In a new start in another world, he vowed to be selfish. With his cunning, he became overpowered.

But in this world, being selfish demanded absolute ruthlessness, and being overpowered came with a heavy cost...