All Hal had ever wanted was a dog. "Never!" cries his mother. "Think of the mess, the scratch-marks, the puddles on the floor." But on the morning of Hal's 10th birthday, the unbelievable happens. He's allowed to choose a dog at Easy Pets, a rent-a-pet agency (a fact his parents keep from him). The moment he sees the odd-looking terrier, he knows he's found a friend for life. But no one tells Hal that Fleck must be returned. When Hal wakes up on Monday morning, Fleck is gone. If dog and boy are to stay together, they'll have to run away.