Sara is a bossy cat who likes to get her way. Sam is a cuddly older bunny with spotted fur and wise advice. Sam and Sara love to go on adventures, but when Sara keeps seeing a red butterfly, Sam is sure she is just imagining things. Red butterflies don't live in this part of the country, she tells Sara.But is the red butterfly really just something in Sara's overactive imagination? Or is there more to these strange sightings?Everything becomes even more mysterious when Sam and Sara's human, Meg, has visitors who bring with them a new mystery about the red butterfly. Will this be their next big adventure?