The Person at the Center of Tough Stepmom

Every turn in Tough Stepmom lands on the same person, and the synopsis makes clear why they cannot step aside.

Tough Stepmom is carried by the situation named in the title. The series has not published a longer synopsis, so the drama stays fixed on that premise rather than a side plot.

That is the spine of Tough Stepmom: the people in the synopsis do not get to pretend the story started somewhere else.