Book Five Long Shadows

When Sol persuades almost all of ShadowClan to give up belief in StarClan, Tawnypelt takes her kits Flamepaw, Tigerpaw, and Dawnpaw to ThunderClan, hoping to find refuge there until Blackstar and ShadowClan see the light and return to believing in StarClan. In hope of helping ShadowClan, Raggedstar and Runningnose beg Jaypaw to help. Jaypaw, along with Tigerpaw, Flamepaw, Dawnpaw, Hollyleaf and Lionblaze, creates a fake sign from StarClan to show Blackstar StarClan is real. Blackstar is still not convinced until the fake sign turns real with Raggedstar and Runningnose coming to tell Blackstar to get rid of Sol. Blackstar is convinced and tells his Clan to believe in StarClan again.
Soon Tawnypelt takes her kits back to ShadowClan, but greencough breaks out and Millie and Briarkit (one of Millie's and Graystripe's kits) are the first victims. Soon, the ThunderClan leader, Firestar, catches the sickness as well. The disease continues to spread through the Clan and Firestar comes up with the idea to temporarily shelter the sick cats in the abandoned Twoleg nest, but soon loses his sixth life. The Clan is short of catmint: in the battle with WindClan, cats trampled and killed the supply. Jaypaw has a dream telling where there is a fresh supply: in WindClan territory.
However, in one dream, he somehow goes back to the time of Fallen Leaves' tribe as a young sharpclaw (warrior) called Jay's Wing. The Tribe is being threatened by Twoleg expansion and votes to move to the mountains. Jaypaw suddenly realizes that this Tribe becomes the Tribe of Rushing Water and they originated from the Clan's current lake home. When he returns to the Clans, he asks Lionblaze to fetch the catmint. Lionblaze refuses because of dreams where he kills Heatherpaw, but as the greencough gets worse, he finally goes. Lionblaze gets the catmint and gives it to Jaypaw, but not without a tension-filled encounter with Heatherpaw, now called Heathertail. Soon the Clan is healed and Jaypaw receives his full medicine cat name, Jayfeather.
Then, during a storm, the camp catches fire. Jayfeather, Lionblaze, Hollyleaf, and Squirrelflight are trapped. Squirrelflight makes it through the flames and drags a stick through in an attempt to save her kits, but needs some help. Ashfur leaps in and drags it all the way through. Just as Lionblaze leaps on, though, Ashfur blocks the way. Squirrelflight begs him to let them through, but Ashfur tells her and the other three that he never forgave her after she left him for Brambleclaw. He also reveals that he was the one who helped Hawkfrost set the trap for Firestar to show her the pain of losing a loved one as he had lost her. He said that he will now kill her kits in another attempt to hurt her. Squirrelflight then reveals a crucial secret: that he cannot hurt her that way because they are not her kits. She explains how she kept the secret from Brambleclaw and the whole of ThunderClan. Ashfur lets them live, but he threatens to tell her secret, and she is shocked that Ashfur would betray her like this. Knowing this, Jayfeather, Hollyleaf and Lionblaze realize they are not the Three since they are not the kin of Firestar.
The fire burns out and all the cats help get the camp set up again. Three days before the Gathering, Ashfur asks Firestar if he can go. Hollyleaf, Lionblaze, Jayfeather, and Squirrelflight are worried that he is going to publicly announce their secret. Between then and the day of the Gathering, the three warn Ashfur that he will regret it if he reveals the secret. Although he is frightened, he refuses to listen to them. Right before the Gathering, the patrol of warriors going notices that both Ashfur and Squirrelflight are missing. Squirrelflight later shows up, wet and muddy, and explains that she was looking for herbs for Leafpool by the border near ShadowClan and fell into the stream. On the way to the Gathering, they see Ashfur's body lying in the WindClan stream as if he had drowned. They take him back to camp and set him for vigil. Leafpool notices a slit in his neck, suggesting he was murdered. After the Gathering, Firestar announces that Ashfur's death was unknown and suspects a cat from ThunderClan may have killed him, and the three see Squirrelflight looking scared and holding her breath. The three vow to keep the recent events involving them, Squirrelflight, and Ashfur a secret.