I need a good summary for my story and so far I have this massively long plot but I need a really good, appealing summary to captivate my reader’s attention.

Here's the plot. Note that this is a Pirates of the Caribbean fanfiction.
14 year old Georgie Whitley and her 7 year old brother Edwin go to visit their aunt in London. It takes place in the year 1934, while they stay at their Aunts home they come across a very strange book that Edwin had discovered in the closet in their room. One night Georgie decides to read it for Edwin and while doing so magical things begin to happen. First when Georgie goes to retrieve the book she notices that it is soaking wet. While she flips through the pages the words begin to move across the pages, also in one of the photos in the first chapter Edwin goes to touches it and his hands completely goes in, in shock he pulls back and notices that his hand is soaking wet.

So if anyone could take this is shorten it that would me amazing
Its the plot, yeah I clearly wrote that. From the plot I need a summary.