While restoring an abandoned ski-lodge, a group of adrenaline-junkie ex-soldiers take sides in a secret war between a legendary creature and mysterious trappers determined to hunt it into extinction. Action/Horror

Very nice!? I'd watch that movie.

After investing in an OLD ski-lodge, a group of friends are forced to take sides in a war between the locals and a?LEGENDARY creature before it?s hunted into extinction.

Add these 2 changes and it goes a long way t what your trying to emphasize.

Agreed with Foxtrot25.

The description of them being soldiers adds to the concept as it gives them a set of skills that would believably work to their advantage.

I'll add that the logline would benefit from describing a single main character. Who of the group takes center stage? Who has the most active role? And who of them changes the most over the course of the story?

I'd also change the inciting incident description to 'When caught in the crossfire between a legendary creature and a group of mysterious trackers...'

The back story is irrelevant in the logline.