One cold winter night, Sweet Pea the orphan lamb becomes very sick. Everyone in the farmyard is worried about her! Under the watchful care of Farmer John, Laddie the sheepdog, and Dr. Alison the mobile veterinarian, she slowly recovers. Dr. Alison tells Sweet Pea she can have a sleepover to celebrate as soon as she is well again. When the day finally comes, her closest friends Sunny, Prem, and Violet join her in the greenhouse for a fun and imaginative “SheepOver” celebration.