A daring adventure - And a mystery waiting to be uncovered Oliver Dunn had one goal this summer - to become a cowboy. When he gets the chance to work on a real ranch, he learns just how tough and exciting the cowboy way of life can be. From saddling horses to helping a bull in need, Oliver feels like he was born for this adventure. But when he returns home, another mystery is waiting for him. For weeks, strange sounds have been coming from his neighbor's yard. A quick glimpse of something fluffy only makes Oliver more curious. With his best friend Travis by his side, he launches an undercover mission to solve the mystery once and for all. But when their late night stakeout leads to an unexpected discovery, Oliver realizes this summer might be wilder than he ever imagined. Cowboys, secrets, and a backyard mystery - this is one summer Oliver will never forget!