Owl leaves the park in search of a mate and the Weasel family have left to start a new life else where. Plucky and Dash race again, while Trey harasses the other Farthing Wood animals. Meanwhile, Bully and his rats begin to build their numbers.

While the number of Bully's rats continues to grow, so does the number of missing animals. When Dash sees Plucky being taken away in a cage to a truck, she decides to follow the truck only to be shut out of a mysterious human establishment surrounded by high walls and spike-top gates. Meanwhile, the Weasels to stay at a farm but the animals wouldn't let them stay. They gain a new Protector who is Rollo the Sheep Dog.

Weasel and Measley find a seemingly nice burrow for them to live when they discover it is being occupied by vicious wildcats. Their loyal "weasel dog" Rollo comes to their rescue. Meanwhile, Fox confronts Trey and tells him that he'll either come to hell or high water, Trey will respect the other animals of the park and he will step down as leader if one of the stags can fight against him for Leadership. Also Ranger, Charmer, and Whisper confront Bully for the first time and he makes his intentions clear. Charmer manages to kill one Rat. His name gets mentioned as Scragg.

Awoken by roaring the animals slowly gather to watch as Trey fights with another stag to become leader of the herd. They hope that Trey loses as any other stag would probably treat them better but he doesn't. While Fox is alone sleeping Bully and his rats pay him a visit and threaten his life while telling him that he should leave along with the Farthing animals. Fox refuses saying they'll continue to fight them, surrounded by rats he fears the worst until they run away when they spot a badger on its way. Hurkel arrives to ask Fox if he wants to watch the stags fighting but when he smells rats in his earth Fox tells him to get Ranger to assemble all the foxes and Adder and Sinuous - they are going to attack the rat's headquarters. They ask Spike where the headquarters are but he denies he knows where it is, luckily a hare tells them. When the animals return after a night of fighting, Dash believes they were chased by hunters and beagles until told it was through fighting rats. An exhau

The animals in White Deer Park are still trying to deal with the army of rats and try to make the Warden aware of the problem. Meanwhile the weasels and the piglet come across a copse with a grumpy Wild Boar living there. Bully forms a task force to hunt down and kill the snakes. They find Sinuous, thinking it's Adder and kill him. Hurkel and Shadow try to comfort Adder as Bully slinks away unnoticed.

As Mossy predicted, a hurricane come to the area around White Deer Park. The fierce winds knock over the last Farthing Wood beech tree and release Owl from her cement shell. After the hurricane ends, Rollo and the Warden find Shadow unconscious and take her to the cottage. Fox discovers Trey pinned under a tree. Another stag, Laird, comes to free Trey and readies to challenge him to a fight for leadership. Because of his injury, Trey reluctantly limps away abdicating his power to Laird. Afterwards, he is taken away by the Warden. Measley declares that he will take no more of Weasel's insults and decides to take their young ones back to White Deer Park. Weasel agrees wholeheartedly.

Owl and Hollow return to White Deer Park just in time to overhear Bully addressing an assembly of his rats. She goes to gather the other animals and they plan to counterattack. Plucky sends Mossy to find Laird so he can send the white deer to stampede the rats. But despite their best efforts, the rats are still too numerous. There seems to be no chance of stopping them, until Cleo bites off Bully's tail. All the animals, including the rats begin to laugh at Bully and he skulks off to the sewers where he came from. After the battle was won, the other rats apart from Spike returned to where they were before they came to the park and Fox calls an assembly to announce that he has decided to step down as leader of Farthing Land. He places Plucky in charge despite slight protest from Ranger. Trey returns to inform the animals that the Warden has merged White Deer Park with the new sanctuary to make one large wildlife preserve. He announces that with so much more space, he has decided to lose his brutish disposition, though he is still not fond of weasels. As Fox and Trey walk away together, Plucky decides that after a hard day's fighting, everyone should rest and explore the new addition to White Deer Park the next day.