Elly knows right away that the little rock she found is not just an ordinary pebble. She can feel its quiet magic and names him Stone Mouse. Her older brother, Ted, refuses to believe her. To him, it is just a dirty, useless rock. But Ted has been carrying around a lot of anger lately, lashing out at everyone and everything around him. As Ted's bad mood grows worse, his constant anger starts to stir up real trouble for the entire family. Stone Mouse may be small and quiet, but he is fiercely loyal to Elly, and he watches closely as Ted's temper spins out of control. Soon, the magical little stone realizes he might be the only one who can help soothe Ted's heart and stop a major disaster. This beautifully gentle and touching story explores how we handle our big, difficult feelings and proves that even the smallest, quietest objects can hold the most incredible magic.