Kim Ho-chang

One day after Cha Dae Woong runs away from his grandfather, he accidentally frees a nine-tailed fox who was trapped in a painting for about 500 years. He didn't realize what he has done until the Gumiho (nine-tailed fox),who took the form of a beautiful woman, appeared in front of him. Dae Woong was so frightened that he ran away from her and became severely injured. The Gumiho saved him by giving him her most precious bead to share with him the mystic fox strength, as she owed him her freedom. (mydramalist.com)

Sujin and Jihun are a detective couple and have to take on a strange case. They have to have a test tube baby in order to investigate a criminal whose wife is also having a test tube baby. They've been wanting a baby for a long time so Jihun likes the idea but Sujin isn't all that happy about it. But Sujin ends up going to the hospital to have the baby and she's put in ward 7 with some strange characters. They're all women trying to get pregnant.