is that reality?

its a story of two girl who found themselves on a place full of snow....they don't have idea where they are, and who they are . they just found a map , ,and a card of instruction. they didn't have any choice accept follow the map and instruction. but everything changed after some time. they couldn't find out if it was real or not. its an adventures and mysterious journey....there is a new card of twist you'll find at every phase.....