Monkey: A Journey to the West
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The first part shows how Monkey became a king, learnt his magic powers, got his staff and ended up imprisoned in a mountain by Buddha.
Then the priest Tripitaka comes along on his mission to get scriptures from India and releases Monkey after 500 years.
Meeting up with Pigsy and Sandy along the way, they then have more adventures along the way.
A good translation of the original source makes this book funny as well as an adventure. There are some lessons about acceptance and behaviour through it.