A militia unit arrives at Meryton for the winter. Meryton is a mile from Longbourn, where the Bennets reside.
The two youngest Bennet girls, Catherine and Lydia, amuse themselves with the soldiers. Their father claims that their infatuation makes them the silliest girls in all of England.
Let's put it this way: If the military was a rock band, Catherine and Lydia would be the groupies plotting ways to sneak into the band's trailer.
Jane is invited to Netherfield to have lunch with Mr. Bingley's sisters, Miss Bingley and Mrs. Hurst.
Mrs. Bennet schemes for Jane to go on horseback, rather than in the carriage, so that if it rains, she will have to stay all night.
Jane gets so sick from getting wet in the rain that the Bingleys urge her to stay until she is better.
Elizabeth is determined to help her sister. She walks three miles in the rain to Netherfield to take care of Jane.
Everybody at Netherfield is surprised by Elizabeth's sudden arrival, and Mr. Darcy thinks to himself how pretty she looks after exercise.
Jane is glad to see her, and Elizabeth begins to like Mr. Bingley's sisters when she sees how affectionate they are towards Jane.
The Bingleys encourage Elizabeth to stay overnight so she can take care of her sister.