Invasion from Inner Earth

I should have realised as the title music was a sort of electronic version of something Ennio Morricone left on the studio floor that I was in for a treat... This is dreadful. A group of young folks find themselves stranded in the Canadian wilderness as technology around them is breaking down. It appears that we are amidst an invasion - but of where, by whom - and why? Don't expect any answers to these and any other questions in this shockingly over-long, badly lit and directed piece of nonsense. The score is frequently outperformed by the sound of static on the radios and the acting (and dancing!) - well, think little Toby's Christmas nativity when he was 8. It didn't help that the version I saw recently was terribly over-exposed (perhaps a dodgy NTSC conversion) but by the middle, the invasion couldn't come fast enough - never mind by the end.