Samantha's Uncle Gard got married to Cornelia which means she gets to spend time with Cornelia's 10-year-old twin sisters. They go on adventures but they become dangerous and they learn something about Samantha's past. Samantha's friend Nellie and her sisters get in trouble which means Samantha must save them.

The Wellie Wishers go camping, but when they arrive at the campsite, they discover they are missing some key items.

When an English girl comes to stay at Molly's during World War II, she and Molly learn to bridge their differences and ultimately enjoy a wonderful, mutual birthday party.

Shortly before the Revolutionary War, nine-year-old Felicity, who lives in Williamsburg, is torn between supporting the tariff-induced tea boycott and saving her friendship with Elizabeth, a young loyalist from England.

When Kit's family has to take in boarders, it seems as if they may be able to keep their house although her father lost his business, but the changes put a strain on Kit's friendship with Ruthie, especially as Kit spends her days helping cranky Uncle Hendrick.

The Wellie Wishers organize a carnival, but when Ashlyn refuses to come, her friends must find a way to convince her to give it a try.