"If you had the power to live forever, would you die for the one you love?" It's almost summer in the tiny American town of Crimson Cove, but 12 year-old twins Joshua and Ella Beckett have a major problem: Their best friend Kory has been kidnapped by the evil Lord Kharon and taken to the Unbetween, a parallel realm of the dead. When a mysterious recluse known only as the Great Witch magically shows them how the futures of two worlds depend upon Kharon's defeat and Kory's safe return, the Beckett's and fellow friends - Daniel, Jack and Raevyn - risk their mortal souls to bring her home. Guided only by a shape-shifting guardian and blessed with extraordinary powers from the Unbetween itself, the five companions face their darkest fears, reconnect with lost loves and battle terrifying creatures on their perilous journey to destroy Kharon once and for all. But the Unbetween holds far more secrets than they ever expected, and the fate of every soul - living and dead - hangs in the balance...