This is 75% back story, 10% the main event, and 15% what happened after. Mostly it is about getting to know who these guys are. The heroes actually play themselves in the movie. But younger actors play them as children of course. The young actors get a great deal of time on screen.
This is really a movie that the GF can watch except for the 10 minutes (or less) of the main event, if she is a tad squeamish about blood and violence.
It was more a travel movie in Europe than an action film.