Pepper and Rover, two New York City dogs, feel miserable after the tragedy of September 11, 2001, however, both dogs manage to recover and enjoy life again.
Mimi is determined not to give up on anyone or anything, but since Mammy died, her father never smiles, her sister Sally is in a bad mood, brother Conor keeps to himself, and even Sparkler the dog does not want to go for walks.
Twelve-year-old Kristina, still struggling to come to terms with the death of her beloved horse, finds it difficult to accept the new dog she receives for her birthday.
Ten-year-old Effie, bursting with secrets since her best friend moved leaving her without a confidante, tries to deal with her problems on her own, certain there is no help to be found in her big sister, Maxey.