The parallel story on the Denver/Buran is here.

The universe was there, and then it wasn’t.

Suddenly the Mackenzie and the Perseverance vanish, appearing in an alternate and unknown universe.  No Montana Station and an eerie silence on all communication channels.  A scan of all frequencies turns up more questions and mysteries, along with a low powered lower band signal on repeat.

Where and when are they?  And what does it all mean?

The story continues in “The Undefeated”