The prophecy

"The prophecy" is the prophecy that is given to Wildfire by Roseflower and Thornpelt in Episode 6. It is as follows: "'A great evil will rise over the Clans, destroying them and torturing the innocent, unless the Half-Clan Hero makes his way.'"In episode 6, Roseflower and Thornpelt introduce themselves as Wildfire's parents. They explain to him how they died but before long the voice of StarClan commands them by saying "Roseflower. Thornpelt. You were given permission to visit him for a reason. Give him the message." Roseflower sighs and gives Wildfire the prophecy. As it typically goes when a cat receives a message from StarClan, Wildfire begins to frantically ask them what it means, but he is cut off when he wakes up.

Even StarClan does not know what the meaning of the prophecy is. It is obvious that 'The Half-Clan Hero' is referring to Wildfire and that he will save the Clans somehow, and in episode 8 it is revealed that the 'great evil' is Ravenstar.