When young ThunderClan apprentice Alderpaw arrives at the home of SkyClan, he finds a strange collection of rogues claiming to be the true SkyClan, with the dangerous and mysterious Darktail as its leader. Unknown to Alderpaw and his companions, when they return to the lake, Darktail and his cats follow them, ready to wreak havoc on the Clans around the lake. Darktail’s past and motivation is unknown, but one thing is clear – he will stop at nothing until he and his rogues, who he calls the Kin, have taken over all of the Clans and forced them to bend to his will.