When a nearby petting zoo catches fire, the homeless animals come and stay at Blackthorn Stables and Mini Whinnys life is turned upside down. She builds a wall to try and keep the animals out of her stall, but when that fails and frustrations reach an all-time high, she realises they want to go home as much as she wants them to. Mini Whinny decides to stage a circus show to raise money to help rebuild the petting zoo.