A house built into the mountainside of the Colorado Rockles is the site of Jenny's summer vacation and the of eccentric Aunt Phyllis. The deserted cabin across the way attracts Jenny's attention from the beginning. With several other children, she explores the premises and discovers an old recipe book which she refused to return. Having alienated her new friends, first by her possessive attitude toward the cabin and then by exploding into a temper tantrum, Jenny suddenly becomes an outsider -- and a severely homesick one at that. On a lonely walk, she meet, a neighbor who like Jenny is also homesick, but for a land he can never see. Somehow his advice softens the angry little girl and leads her to return the book and apologize. This illogical transformation is characteristic of a story which veers haphazardly from mystery to psychology, to a ""happy"" ending.