Jae-Sin is a vice president of the well-established animal general hospital. He's a victorious man with a handsome appearance, a stable social position and, of course, a high profit.

At the beginning of the work, apart from physical success, her personality is hard to receive high scores. He was a veterinarian in the first place because his animal care was free from insurance. Besides, he is blinded by greed, so does overtreatment to earn money. One day, while he was desperate to rake my money in such an inappropriate way, Kang Sook-Hee, who speaks North Korean dialect, appears and says to cure her alligator snapper, Sooni. However, she did not have money, so of course, Jae-Sin rejects her request. 

After that, Jae-Sin is sentenced to the last stage of lung cancer. Oops, don't worry too much. His lung cancer does not have a meaning, but it is just a setting. The frustrated Jae-Sin involves in various happenings and experiences lip contact with Sook-Hee. Surprisingly, he notices that if he kisses her, the terrible pain disappears like a wash. The strange girl Sook-Hee, who speaks the North Korean dialect, has eternal youth and immortality, blocks a truck crash with one hand, was a superwoman who can even cure a person who is dying due to cancer.

The title of 'New stone age girl' is literally because Jae-Hee has lived here on the Korean Peninsula since the Neolithic. She is almost like a mountain spirit. Sook- hee has a good feeling for him, and because it is a matter that took his life, he had to bring her into his house. The following story is quite similar to the drama 'My Love from the Star'. Although the composition is slightly different, it is the affection between an immortal person (superwoman) and a normal person.

However, different from independent drama, My Love from the Star, New stone age girl is a part of a project sharing various worldviews, 'Super String' of YLAB. Sook-Hee seems like a very important person in the worldview, and of course, she does not seem to be in a leisurely position to enjoy her comfortable cohabitation life with Jae-Sin.