2-17: A Piece of the Action

Dispatched to investigate the destruction of several planets, the Enterprise encounters the badly damaged U.S.S. Constellation.

The Exeter is found drifting in space, its crew dead from a mysterious disease, except its missing captain.

A transporter accident swaps Kirk, McCoy, Scotty, and Uhura from distinctly opposite parallel universes.

Upon investigating the disappearance of the S.S. Beagle crew, the Enterprise encounters a modernized Roman-like civilization.

Enterprise beams aboard a sophisticated device that poses a grave threat.