Murray Bear is supposed to go to the waterfall with his sister, Molly, to meet a friend, but Murray is worried. What if it's too LOUD? he cries Or what if I get swept away! So Molly tells him about her special worry box. When I'm worried about something, she says, I write it down, then put it inside. She offers to help make one for Murray, and he takes it on their journey-but will it really help?