Lorelai and Chris fly to France to take Gigi to see her mother, Sherry. Once there, Chris proposes to Lorelai and the couple return to Stars Hollow as Mr. and Mrs. Hayden. The joy of Rory's trip to the country (Stars Hollow) with Lucy and Olivia is dampened by Rory's breakdown regarding her fears for the future, and the unexpected appearance of a past friend who disavows having known Rory. Zach and Lane find out they're having twins and break the news of their impending parenthood to Mrs. Kim, with unexpected consequences.

Rory makes amends with Lucy while Christopher finds the letter Lorelai wrote for Luke's character reference. Rory witnesses a frightening sight while at Richard's Economics class. Sookie is acting weirdly so Lorelai makes Jackson confess: Sookie is pregnant again, even though Sookie told Jackson to get a vasectomy.

Lorelai plans a road trip to attend the wedding of Mia, the woman who served as a surrogate mother/grandmother to the girls for years. Rory has a fight with Logan over his immature reaction to his business disaster, and agrees to go on the trip with Lorelai. Emily invites herself along in an effort to get away from Richard, who is driving her crazy while he recuperates at home. At the wedding, Emily is upset by the close relationship Mia shares with Lorelai and Rory. Lorelai learns that Emily came to see Mia five years earlier to ask for pictures of Lorelai and Rory during the years they were estranged. Logan makes a surprise appearance and asks Rory to forgive him. Meanwhile, Lane and Zack ask Luke to be the godfather to their twins Steve and Kwan. Finally, Lane goes into labor and Luke helps get everyone to the hospital.