Dark times have come for warrior cats. The Tribe of Shadows has disintegrated, and their former camp has been occupied by a gang of vagabonds under the command of a ruthless Darktail, who threatens death to anyone who dares to set foot on the territory he has captured.The three remaining tribes gather together to expel the impostors and restore peace in the forest, but in the midst of a battle, One-Star and his warriors suddenly leave the battlefield. What happened to the leader of the Wind Tribe? What is the secret behind such a sudden change?Without the Wind Warriors, the alliance is breaking up, from now on no cat can feel safe. The stars are silent, and the Darktail only tightens its claws over the forest, and no one knows which tribe will become the new victim of the cruel leader of the vagabonds. The clouds are thickening over the warrior cats, and the future promises them nothing but death and oblivion.In these terrible times, Olkhogriv tries to convince everyone that their only hope is to fulfill the prophecy of their ancestors and find the lost Heavenly tribe. This is the only way to prevent an impending storm and clear the skies so that the light of the stars will shine again over the lake.