How would you know when the last of anything is gone?

Everything has an expiration date, a point that it simply is no more. Most of the time we aren't even aware we've reached that time until we look around and see that our era has ended, our favorite ice cream flavor is no longer made, we can't get a telephone that doesn't connect to the internet, or the last duck is gone.

This is a story about two people, quite like us, living in another time, a difficult time, possibly in another place, but one that looks a lot like this one might become not far down the road of time.