Someone has lost their big, red balloon! Finnigan is playing in the park when he looks up and sees a big, red balloon in the sky. Whose balloon is it? Finnigan must find out. He jumps up and catches the balloon and then goes to find his friend Bruce. Does Bruce know whose balloon it is? No, he does not. Finnigan goes to see his friends Caper and Willow. Do they know whose balloon it is? No, they do not. Finnigan finds his friend Simon. Does Simon know whose balloon it is? No, he does not. Will Simon and Finnigan discover the owner of the big, red balloon?