In Humpty Doo book 3, Jinx Valentine and three other children are recruited to manage the remote Humpty Dooish cattle station at Nowhere Else. 

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But this isn't a simple holiday with some farm chores thrown in. All four children are competing for one coveted spot in the Humpty Dooish Cavalry.

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Jinx finds herself tackling multiple obstacles - topiary that moves around the property, aggressive frogs, a ninja swan, floods, and a sausage dog who enjoys tripping people over. Worst of all, one competitor is willing to do anything to get ahead. Including cheat.