Sylvester was born to Misty in a twoleg den. His life there was miserable, the twolegs had many cats and often neglected their feeding and neutering, so the cats were reproducing and starving. Misty and her brother Haven managed to escape with Sylvester, none of the three cats had ever been outside before and as a result, they had no idea how to hunt or defend themselves. In hunger desperation, Haven ate a poisoned, dead rat and unfortunately passed away, leaving Misty alone with her kit. Misty, unable to care for herself or Sylvester made the hard decision to give her kit away to someone who could, and the only cats who came to mind were those of the wild cat clans. lla sed fringilla turpis. Donec eu risus tellus. Donec in dignissim lacus, sit amet pellentesque augue.

Sylvester was renamed Ashpaw in Thunderclan, though he was very young and started his training somewhat later. Ashpaw didn't really remember his time as a kittypet but sometimes recalled his mother’s face, but nevertheless, when cats claimed that he was once a kittypet he felt the undying urge to prove himself to them by becoming the most loyal, best warrior he could be in Thunderclan.

It was later discovered that he had a half-sibling in the clan named Frostpaw(shade).

Ashpaw had a hard time with his training, as his mentor Darkpetal wasn’t really good at teaching him the skills he needed to make it on his own. Luckily, a few warriors of Thunderclan such as Cloudspots, Bumbleflight, Tawnywhisper, and Harefire helped him. During this time he gets to make a few friends, especially Flamepaw, during a group trip to Sunkissed Creek. The couple becomes instant friends and starts to get to know each other better and better until they become best friends and start to develop special feelings.

At some point, Cinderstar stepped down and gave up her leadership position, so Sparrowstar became the new leader and Copperfire deputy. Later on, Cindersky will die from a predator attack and Copperfire will disappear, leaving Thunderclan with no deputy. The next one will be Thrushfur.

His assessment was held by Vineglow, as Darkpetal had disappeared for some time and wasn’t available for Ashpaw, and the she-cat made the test a lot harsh for him. Against all odds, he fought until the end even with bleeding injuries still fresh on his skin.

Ashpaw obtained a new name the same day as Flameheart’s. They would be the first to be appointed warriors under Sparrowstar’s leadership. The gray warrior keeps his clan duties and is finally ready to confess to Flameheart his true feelings: the two become a couple and continue their adventures together. Soon enough, Sootfur receives his first apprentice: Quietpaw, a mute she-cat that Sootfur quickly learns to appreciate and care for. But, just after her territory tour and her first lesson with her friend Oriolepaw, Quietpaw and his brother Rainpaw (Crowpaw) are attacked by a fox outside of camp, and the young she-cat dies to save her sibling. Sootfur will lead a patrol under Sparrowstar’s order to chase and kill that same fox. Soon after that Quietpaw's brother, Crowpaw, becomes his new apprentice.

In the meanwhile, during a Gathering Sootfur openly denounces Dawnstar’s decision to not appoint any deputy and accuses Shadowclan of not being a clan of warriors anymore. The passivity of the leaders and the fact that they all turned their back on Shadowclan’s threat to break the truce made Sootfur doubt the roots of the clans. Later on, he will have a discussion with Sundust about Starclan’s connection and their role in the clans’ history.

Sootfur teaches Clan Etiquette to the clan kits and keeps doing his warrior duties, always finding time for his lovely mate. He also receives his second apprentice, Sandpaw, but his troubles with his other apprentice never end. Crowpaw is consumed by resentment toward his father and the whole clan, and doesn't even get along with Sootfur, so their training doesn't really go on smoothly. Sandpaw, on the other side, is a shy tom who shows complete curiosity for the world and is always ready to learn new things. At a certain point, Sootfur hosts an event to teach Thunderclan tail signals to communicate silently between each other, knowing that the conflict between Thunderclan and Shadowclan is becoming too big with every second.

One day the earth in Thunderclan camp seems to collapse and huge sinkholes start to appear all over it. Thrushstar orders an evacuation and the camp is forever left behind in a chaotic disorder. As the clan settle in a new position on the other side of the territory, the gray tabby isn't ready for the news he's going to receive: Flameheart has become pregnant.