An eerie encounter with a ghost girl promises an unusual summer for four friends. The ghost needs the girls' help-the town is about to cut down the historic, but dying, tree she has haunted since her death in a fall seventy years before. The girls dream up a plan to save the tree: they'll have a sockathon-a wacky fundraiser involving a chain of socks. But how can collecting socks raise enough money in time? And what does the mysterious spirit of Eliza Baker really want?

Told in four different voices, the novel gracefully weaves together the perspectives of the plucky girls in a funny and touching middle-grade story about friendship and giving to the community.