Ilgang Group, the No. 1 corporation that controls the Korean economy. However, its inside is festering and stained with various corruptions. The chairman needed a solution to save the rotting Ilgang group, he calls for his youngest son, “Lee Seonho,” who was living a quiet life in the U.S., to come back to Korea and he makes a secret proposal to him… “You scumbags who treat your employees like dogs and pigs! Your power trip will be corrected by us, the “Company Grievance Squad”!