When eight-year-old Keeker gets a pony, she is faced with the challenge of winning the animal's trust and friendship, and they both come to understand the phrase "You scratch my back and I'll scratch yours."

Upon learning that an older woman has moved into run-down, creepy Crabapple Farm, nine-year-old Keeker rides over on her pony, Plum, to find out whether the woman is a witch.

Ten-year-old Keeker is excited about going to sleep-over pony camp, until she finds that one of her bunk mates is her rival Tifni.