Jeon Seong-guk, once the near-chairman of the global Samjeon Group, suddenly dies of a heart attack—only to open his eyes in a cramped one-room apartment as the child of a struggling young couple. From wealth and power to poverty and diapers, his new life is anything but ideal.

But a minor setback won’t stop him. With his past life’s experience, he’s determined to turn his humble beginnings into a chaebol empire!