Losing a sibling is hard. Losing three of them is even harder. Repairing a broken bond of trust is harder still. After his three brothers disappeared, one after another, gone to a mysterious place known only as The Rainbow Bridge, Buddy the degu is all alone in his cage. Confused and frightened, he knows only one thing for certain: he last saw his brothers in the hands of the human caretaker. That knowledge breaks the bond of trust forged between Buddy and his human in the years since he was a pup, and leaves him convinced that letting her get her hands on him will mean he disappears too....