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Some guy who is NOT named Biggle's has ONE adventure in just ONE time. So with an inaccurate title, we travel back and forth to 1917 to defeat the Nazi's secret sound weapon that makes things too hot. Don't ask too many questions.
Biggle's on paper sounds like a missed gem from our youth. The idea of a man named Biggle's traveling through time and having hijinx sounds like it would become your favorite movie when you're 12. Apparently the books are exactly that. But this movie is not. Biggle's is not the protagonist. It's a guy named Jim Ferguson who somehow gets transported back and forth from the present to 1917. So even he doesn't have "Adventures in Time" He just goes back to ONE time. So if you are looking for a sillier Bill and Ted's, you're not going to get it.
There is some good humor sporadically with most of the yucks coming from Ferguson and his awkwardness when he appears in 1917 without any warning of the time jump. There are also a couple incredible stunts especially with the helicopter but the quality of the stunts and jokes are mired by the directing/editing. The cuts make the stunts vague as to what took place and how the stuntmen put their lives on the line. The jokes are also poorly timed and most go unnoticed by far too much dialog immediately following the joke. Some might call them subtle but in a film where everything else is so overt and with such a crappy story you probably want to highlight the humor a little more.