It is an adventure story that harkens back to a Jack London tradition. And what makes that striking, is that it is so much more real than what we presume action adventure movies to be—what they have evolved to be in the last 20 years.
It is a gripping story that pays homage to a Jack London legacy. What makes it stand out, nonetheless, is its greater verisimilitude compared to what we usually anticipate from contemporary action-adventure films.