Amidst ongoing strife within and between the Clans of warrior cats, Brambleclaw is tempted by the dark plans of his father and brother, and the meaning of Leafpool's ominous visions becomes clear.

As a young warrior, Crookedjaw pledges his undying loyalty to RiverClan in exchange for the promise of power, not realizing that his pledge will haunt him when he becomes the leader of his Clan.

"More than a moon has passed since medicine cat apprentice Alderpaw left ThunderClan to go in search of SkyClan, only to discover that the Clan had been driven out of its territory by a vicious group of rogues. Alderpaw returned to ThunderClan unsuccessful in his quest, but not empty-pawed"--Publisher.

After the warrior cat Clans settle into their new homes, the harmony they once had disappears as the clans start fighting each other, until the day their common enemy--the badger--invades their territory.

Kitty, who looks like a kitten yet feels she is actually a unicorn, begins to doubt herself as others ridicule her, until she meets a unicorn that helps her discover and embrace who she is.

In addition to being naughty and losing their company clothes, Tom and his two sisters indulge in rowdy behavior when they are sent upstairs as punishment.

As Jayfeather, Lionblaze, and Dovepaw continue to seek answers to the mysterious prophecy that binds them, they learn that another cat may play an essential role in defeating the Dark Forces.

"After countless moons of treachery, Tigerstar's Dark Forest apprentices are ready to lay siege upon the warrior Clans. As Jayfeather, Dovewing, and Lionblaze prepare to lead their Clanmates into battle, they await the arrival of the mysterious fourth warrior who is prophesied to help lead the Clans to glory."

The author, a doctor at the Steere House Nursing and Rehabilitiation Center in Rhode Island, shares stories of Oscar, a resident cat that seems to know instinctively when patients are at the end of their lives.

Mr. Putter and Tabby go to their neighbor's house to make soup, but Zeke the dog makes it very difficult for them.