We got this as part of the summer reading program for our son going into 4th grade and it was a huge hit! I decided to order the 3 book bundle even though he only had to read the 1st one and so glad that I did! The value for all 3 was great and he was able to just keep going which was a win for us. The story line is easy to follow but has a really good message. I dont want to give out too many details! I suggest this for 3rd graders-5th graders.