Marble Pie is the shyest and youngest of the Pie sisters. With her sisters Maud and Pinkie gone off on their own, it leaves Marble with her parents and her other sister Limestone to tend to the rock farm. With so much work to do, Marble tends to get stressed a lot. One day while in the attic, Marble decides to vent her feelings and frustrations, not knowing someone (or rather something) was going to be there to "listen."