While vacationing with their widowed father in the Berkshire Mountains, four lovable sisters, ages four through twelve, share adventures with a local boy, much to the dismay of his snobbish mother.

"Lydia's older sister Rosalind is getting married and in the most perfect setting-Arundel! Now, the entire family is going back to the spot where they met their 'honorary brother' Jeffrey and had endless adventures! And sure enough, the adventures do not stop. There are close calls involving almost too many dogs to count, dances at bus stops, and the reappearance of a longtime enemy. but most of all there are six siblings with a bond that's as unshakable...

When the three younger Penderwick sisters go to Maine with Aunt Claire and are separated from oldest sister Rosalind for the first time in their lives, an uncertain Skye is left in charge as the OAP--oldest available Penderwick.

"Teaflet and her brother, Roog, are ready to throw their annual Strawberry Jam Party for their friends in Trefldom. They want it to be the best party ever, even ten times better than the best party ever! But the inspector of neatness is coming to examine their higgledy-piggledy house from top to bottom. If she finds even one pinch of dirt, or one messy bed, the party will be canceled. Teaflet promises to clean while Roog bakes for the party. But will...