Cobber the Collecting Crow

Cobber Crow, a black crow who loves to collect shiny objects. Her marble collection is her favorite and she is always hunting for different marbles to add to it. Her best friend Sparkles Cat, lives with a human girl named Becky, who also loves to collect and play with marbles. When Becky loses one of her favorite marbles with a gold star shape inside. Will Cobber fess up that she found the marble, hide it and is willing to give it back or will she decide to keep it for herself? What happens when Sparkles finds out that she knows where Cobber hid the missing marble?