Lorelai (Lauren Graham) got pregnant before marriage and gave birth to her daughter Lori (Alexis Bledel) at the age of 16. For this reason, she broke up with her mother Emily (Kelly Bishop) and father Richard (Edward Herrmann), left the wealthy family, and raised her daughter alone with her stubbornness and hard work. Time flies like a white horse. Now, Lori has become a beautiful girl, and Lorelai has entered middle age. Fortunately, the unique growth environment and the small age gap make Lori and her mother like friends, and they get along easily and naturally. At the same time, Lori, who is excellent in both character and learning, has a lofty ideal of being admitted to the Department of Journalism at Harvard University. Family, friendship, love, and growth have left an indelible mark in everyone's life.