Callista and the Mystery on Grandpa's Farm

Callista and friends are back for another adventure. It's Grandpa's birthday. Callista and friends are looking forward to visiting Grandpa on his farm to celebrate his birthday. They love feeding the animals but when Bessy Grandpa's prize cow goes missing they find that all of the animals are gone. Will they be able to help Grandpa find Bessy and the animals in time for the county fair tomorrow?