End of the Clans

For many, many moons the four Clans of the lake have lived peacefully together, but the peace will be broken, when a disturbing prophecy comes to the Clans from a medicine cat. "The Clans will fall unless you get rid of the traitors that will destroy it! The Clans will be live on once more" Now the Clans are suspicious of their Clanmates fearful that they will betray them and bring ruin to the Clans!
Will the traitors be found and be stop from bringing destruction to the Clans? Or will they be too late?