While his brother is fighting in WWI, a small independent Australian boy who lives in the countryside with his overbearing mother and pet dog and who must wear a leg brace decides to overcome his handicap no matter what.

一百多年前，两位探险家乘坐气球到非洲探险，在探险过程中他们客服重重困难终于完成了这次历险，并和当地土著居民结下了友谊