Sienna is crazy about netball, especially playing Goal Keeper. But Sienna’s other passion is horse-riding, and when her Uncle loans her a beautiful palomino to ride at Pony Club, Sienna is ecstatic. That is, until she realizes that between netball and horse-riding she barely has a spare minute. Soon, Sienna is exhausted and both her schoolwork and netball skills are suffering. She’s even starting to lose her well-known sense of humor! Will Sienna find a way to balance her hobbies and chase her dream of becoming a great Australian defender?