A year has passed since the devastating loss of sisters Hannah and Beth, and now Emily receives an invitation from their brother, Josh, urging her to come back to Blackwood Mountain to honor the anniversary of their tragic disappearance. Emily is weighed down by a heavy sense of guilt, feeling responsible for the prank that ultimately contributed to their deaths. Despite this inner turmoil, she resolves to push aside her feelings of regret, striving to maintain a facade of confidence as she and her boyfriend, Matt, make their way through the snowy terrain, starting their journey from the cable car station to the lodge.