What are some similarities between the book and movie of percy jackson and the olympians: the lightning thief?

First of all, I would like to say that I did not like the movie. It was poorly adapted. Okay, similarities: 

1. It had the same main characters with the same names
2. It followed the story line pretty accurately

That's really all I have for you. a bunch of the events that occurred in the book also happened in the movie, you can probably name more than I can at the moment. It should be pretty easy to compare unless you haven't read the book or seen the movie... good luck!

Ithink it is 2 direct object