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.