Tilda Braint is nearly 16, restless and having trouble figuring out what on earth she's supposed to do next. Living in a small coastal town doesn't help either. When two seals land in the middle of Tilda's life, they turn it upside down. They're a long way from home and may well be lost. For Tilda, the seals may turn out to be in exactly the right place at exactly the right time.