An engaged couple's backpacking trip in the Caucasus Mountains is derailed by a single misstep that threatens to undo everything the pair believed about each other and about themselves.

Backpacking in the Caucasus Mountains, walking for hours, an engaged couple (Furstenberg, Bernal) and their tour guide trade anecdotes and play games to pass the time, until a momentary misstep, that takes only two or three seconds, changes everything.