The cruel and domineering Tigerstar, who lives after death in the Dark Forest, comes to Brambleclaw and Hawkfrost in their dreams. He teaches his sons how, with the help of deceit and betrayal, to become the head of two united tribes. Brambleclaw must make a difficult choice: either obey his father's will, or remain loyal to his Clan and its leader Firestar. What will be more important for Blackberry: the thirst for power or devotion to fellow tribesmen?..