Brightkit, a bright little kit full of excitement to become a warrior alongside her brother, wants nothing more than to become the leader of TreeClan, but when tensions rise with RainClan, Brightkit wonders if being a warrior is really all that fun. Leafkit, the brother of Brightkit, wants to make his sister happy by becoming a warrior despite wanting to help the medicine cat. However, when RainClan begins to become hostile, he begins to wonder if he should break his sister's dreams or sacrifice his own dreams for her.