The six cats hurry back, but on the way, they meet some cats in the mountains known as the Tribe of Rushing Water. The tribe is being hunted by a large mountain cat, named Sharptooth. (mountain lion) . They think that Stormfur is the cat that is foretold to save them. In the end, it is Feathertail, Stormfur's sister, who kills the mountain cat, but she dies doing this. After leaving the tribe, the five remaining cats go home but find that the clans are worse than they had thought. The cats are all starving because the humans are scaring away all the prey and destroying the land. Firestar finally manages to convince the other clan leaders, (Leopardstar of RiverClan, Blackstar of ShadowClan, and Tallstar of WindClan, though he was willing) to come with him, and the four clans travel to a new territory by a lake.
But even though the cats are now safe, the trouble is not over. Squirrelpaw, given her warrior name Squirrelflight, does not trust Brambleclaw because he is friends with his half-brother Hawkfrost, son of Tigerstar and a rogue called Sasha. Leafpaw, now known as Leafpool, falls in love with Crowpaw, now known as Crowfeather. As the cats fight and fall in love, lots of badgers attack ThunderClan, making Leafpool make the choice to give up Crowfeather. It also results in Brambleclaw and Squirrelflight realizing how much they mean to each other. In "Sunset," Hawkfrost wants to kill Firestar so that Brambleclaw can become leader. Brambleclaw realizes that he is more loyal to Firestar than to his half-brother, and he kills Hawkfrost to save his leader.
This series is about three cats - Jaypaw, Hollypaw, and Lionpaw. They are the kits Squirrelflight and Brambleclaw and they are also grandchildren of Firestar.
These three kittens are about to be ThunderClan apprentices. Hollypaw wants to be a medicine cat, and Jaypaw and Lionpaw will train to be warriors. However, Jaypaw is blind, and training to be a warrior will be hard for him. Eventually Hollypaw and Jaypaw switch roles after StarClan, the warrior ancestors, tell Jaypaw he needs to become a medicine cat. A few moons later, Lionpaw begins secretly meeting a WindClan apprentice, Heatherpaw while being trained by Tigerstar. Heatherpaw finds a set of secret tunnels under the ground and she and Lionpaw meet in them. Hollypaw finds out about this, and she and her friend Cinderpaw try to stop him from going to the tunnels. He eventually realizes that it is wrong to meet a cat from another clan, and breaks off the friendship. Then, three WindClan kittens get lost in the tunnels and Heatherpaw, Lionpaw, Hollypaw, Jaypaw, and Breezepaw have to save them.
In "Outcast", the Tribe of Rushing Water is in danger from another band of cats in the mountains. Firestar sends the original New Prophecy cats, plus some extras, to the mountains to try to help them. Jaypaw meets the Tribe of Endless Hunting, the tribe’s ancestors, and realizes that the tribe is not all that different. In Eclipse, WindClan is not happy about ThunderClan taking in non-clan cats, so all four clans battle (Thunder and Shadow vs Wind and River), and the fighting is only stopped by an eclipse. A strange cat named Sol had predicted it, and Jaypaw thinks Sol is very powerful. After the battle, Hollypaw and Lionpaw get their warrior names, Hollyleaf and Lionblaze.
Sol tries to become powerful within the clans by convincing ShadowClan to stop believing in the Warrior Code. Jaypaw, Hollyleaf, and Lionblaze fake a sign from StarClan with Tawnypelt's kits to help to make Blackstar believe in his warrior ancestors again. Sol is driven out, and Jaypaw, after saving ThunderClan from a greencough, is given his medicine cat name, Jayfeather. When the clan is in the camp, a fire starts, and the three are trapped on a cliff. Squirrelflight tries to save them, but a warrior called Ashfur blocks the way. It turns out he was mad that Squirrelflight chose Brambleclaw to be her mate, and not him. In order to save the three, Squirrelflight has to tell Ashfur an important secret - Jayfeather, Lionblaze, and Hollyleaf are not her kittens. Ashfur wants to tell all the clans, so right before the gathering, he is found dead in a river. The cats think Sol did it, so some of them go on a trip to a Twolegplace (a human town), find him, and take him back to ThunderClan. Meanwhile, Jayfeather is trying to find out who his mother is. After finding some clues, he realizes that she is Leafpool, and his father is Crowfeather. Hollyleaf is very mad upon hearing this, and she herself tells the cats at the gathering about it. She also tells her brothers that she killed Ashfur to protect them. Then, to escape what she did, she runs into one of the tunnels. It collapses, and though her body isn't found, it is assumed that she is dead.
The fourth arc follows prophesied cats Jayfeather and Lionblaze as well as a new addition, Dovewing, as they work with Dovewing's sister, Ivypool, to defeat the Dark Forest. The Dark Forest is home to the souls of cats who were evil in life and broke the Warrior Code.
The fifth arc details how the five warrior Clans came to be.
The sixth arc follows Alderheart and Twigbranch of ThunderClan and Violetshine of ShadowClan as they attempt to bring SkyClan, the lost Clan, back to the lake home of the other Clans.
The seventh arc follows Bristlefrost of ThunderClan, Shadowsight of ShadowClan, and Rootspring of SkyClan as they try to purge an impostor from their leader, Bramblestar's, body. They also attempt to regain lost contact with StarClan, the spirits of warriors who have died.
Firestar goes on a quest with Sandstorm to save SkyClan.
Bluestar's life from kit to leader of ThunderClan.
SkyClan's life after Firestar leaves.
Crookedstar's promise to a mysterious cat leaves him with all the power he could dream of, but no one to share it with.
Yellowfang's ability to feel the pain of other cats has to be kept a secret to her Clan, but at what cost?
Tallstar sets out on a quest for revenge on the cat he believes killed his father.
Bramblestar questions his place as leader of ThunderClan as a large storm nearly destroys their lakeside home.
Moth Flight learns of her destiny as first medicine cat of the warrior Clans.
SkyClan is sent away from their home. Hawkwing has to help them find the other Clans.
Dovewing is pregnant with Tigerheart's kits. She travels far away to find a safe place to give birth. Tigerheart has to find them and bring them back home.
In WindClan, Crowfeather tries to understand his son, Breezepelt. When stoats come and hurt his Clan, Crowfeather needs to make peace with his family.
Squirrelflight fights for the protection of a peaceful group of female cats known as The Sisters, while worrying that she'll leave no legacy when she dies.
Long ago, Graystripe vowed never to leave his Clan, but as turmoil unfolds in the modern ThunderClan, he finds himself leaving it in the hopes of finding an answer to the problems they face.
Leopardstar wants what is best for her Clan, but has she gone too far this time?
Hollyleaf meets a strange cat in the tunnels beneath the Clans' territory.
Mistystar struggles to cope with the knowledge that her medicine cat doesn't believe in StarClan.
Cloudstar leads SkyClan on an ill-fated journey to find a new home.
Tigerclaw, exiled deputy of ThunderClan, seeks revenge on his former Clanmates.
Leafpool hides her kits from her Clan with the help of Squirrelflight.
Dovewing finds the loss of her powers nearly impossible to bear.
Mapleshade seeks revenge on every cat who has wronged her.
Goosefeather must cope with the ability to see the fate of living cats around him, including his own.
Ravenpaw takes his mate, Barley, and Barley's sister's kits to SkyClan before dying.
Spottedleaf stands up for herself against the predator Thistleclaw.
Pinestar decides to leave ThunderClan and become a kittypet (house cat).
Thunderstar struggles as the first leader of ThunderClan.