I bought this movie from a seller in America so I already own this DVD in the UK despite it still only being available for Pre-Order.
I would suggest watching one of the series first just to familiarise yourself with characters so you can get the most out of it although its not essential. I watched this with my boyfriend who hadn't seen anything from hetalia before and the odd bit of explaining or pointing out which country was which made it easy enough to follow.
The film is 80 minutes long with English dub(optional japanese dub and engish sub)
80 minute commentary (which is basically voice actors speaking over the film answering questions, and having a laugh etc. One particular moment of J Michael Tatum (voice of France) ranting about Harry Potter having me in stitches.)
The Hidden History of Hetalia (written pages which explains historical facts referred to in the movie)
Original Theatrical Ending
Textless Theatrical Ending
Opening Day Stage Opening
Paint It White! Trailer
Outtakes (Voice actor bloopers, really funny)
Additional Trailers for other anime
The movie itself follows our main 8 countries (Italy, Germany, Japan, America, Britain, France, Russia and China) in the modern world as they are attacked by an alien race called Pictonians. The aliens are trying to invade earth by making it void of colour, individuality and personality , hence the title 'Paint It White!'
Other countries fall to the Pictonians, even Poland's pony isn't spared! although Switzerland and Liechtenstein's 'barrier of neutrality' keeps them safe they miss all the action and instead enjoy a yummy picnic in their garden. Our main characters board the alien mothership desguised as aliens(including China's Panda) to try and convince the Pictonians that individuality is worth keeping on this planet as they all show off their individual styles and cultures which brings its own hilarities. Personal favourites being Germany being unable to share his beer and Russia's having the poor Baltic states dancing ballet.
There are flashbacks throughout the movie to essentuate the characters personalities with clips from the series with some of the best bits so there's always something familiar in the movie.