A young boy's friendship with a playful kangaroo leads him on the ultimate adventure in this fun-filled story for all ages. 12 year-old Billy McGregor lives on a ranch in the wild rugged Australian Outback with a loving mom and lots and lots of great animal friends - especially a baby kangaroo named "Joey". But when Joey's parents are kidnapped by poachers, Billy knows he must do whatever it takes to help them and reunite Joey with his rightful family. Boarding a train for the big city, the two pals embark on a fantastic adventure discovering tons of excitement and fun new friends along the way. But when they learn that Joey's parents' lives are in danger, they come up with a daring plan to rescue them - with the entire nation cheering them on!