Fireheart is a young tom who is a warrior of ThunderClan. After the fire that drove ThunderClan out of their own territory into RiverClan territory, he and his best friend, - who now resides in RiverClan - Graystripe, set out back into the burned-down territory in search for the current state of ThunderClan territory. When they arrive, Fireheart is awfully grief-struck when he finds his friend and the cat whom he'd taken care of for many moons, Yellowfang. His voice is very shaky as he realizes his friend is going to die and there is nothing he can do to stop it.