The heroine of the Korean drama "Dakteo Tamjeong" is a young doctor named Do Jung In, who works for the large company TL Group. Her job is to protect ordinary workers from workplace injuries and other corporate abuses. When someone from the company falls ill or becomes a victim of an accident, it is up to her to determine who is responsible. Of course, the company does everything possible to protect its interests, but Do Jung In's task is to uncover all the dark secrets of her employer.