In 'White Blast,' a bloody standoff at a snowed-in train station

Films these days tend to fall into one of two camps. The ones that are churned out in droves for streaming are lean, dopamine-chasing thrill rides meant to be devoured in one sitting. Meanwhile, movies made with the multiplex in mind keep getting bigger, with sprawling fictional universes and effects to match. "White Blast" is an anomaly in that sense: a modest, 89-minute mystery that is headed for the big screen anyway. Set at a remote rail station in the snowbound mountains of Gangwon Province