After a bad season 1, the makers of Jessica Jones tried their best to work on the story and screenplay of Jessica Jones.
Marvel has invested so much energy and money on Jessica Jones that they just can not leave that now. In season 2 they got back to the cliche theory : "THE DARK PAST". In the whole season 2, Jessica fights with her past. There is no actual antagonist in season 2. It is just her and her family matters. Jessica tries to find out about her past ans finds the medical center where she was experimented and were given super - powers. SO, Jessica tries to find that culprit who did this to her. But she finds out that her mother is actually working with that doctor who experimented on her. Now, she is in a dilemma. She just can not kill that doctor because her mother loves the doctor.
Though it is not Marvel's best tv series, I can certainly say that it is much better than Jessica Jones Seaon 1. Before "MARVEL'S DEFENDERS" , they tried to ensure that Jessica Jones get a good response from the viewers as she has a very big part in the upcoming MARVEL television series.