Two kids named Cody and Abby plus their best friend Marcella and baby brother Fig come to their grandparents' farm for a visit. Cody gets bullied by the two girls for believing that his stuffed Barney toy can come to life. After the kids use their imagination and it comes to life, Cody wishes to go on an adventure. The next morning, they find a mysterious egg that Barney says will hatch if safely kept until it changes color. When the egg is lost they go on a musical adventure in the city to find it.