S1E15 · 11001001

The Federation starship Enterprise arrives at Starbase 74 for a routine maintenance check. Captain Jean-Luc Picard (Patrick Stewart) and Commander William Riker (Jonathan Frakes) greet Starbase Commander Quinteros (Gene Dynarski) and two pairs of small humanoid aliens known as Bynars; the Bynars heavily rely on their computer technology and work in pairs for best efficiency. Much of the crew take shore leave while Picard, Riker and a skeleton crew remain aboard. Riker is intrigued by the Bynars' claimed upgrades to the holodeck and starts a program in a jazz bar. The program includes a woman named Minuet (Carolyn McCormick), by whom Riker is fascinated, both as a beautiful and charming woman, but also by the level of sophistication in her responses. Riker shortly returns, and Picard walks in on him kissing Minuet, and he too is amazed by the simulation.

Meanwhile, the Bynars discreetly create a catastrophic failure in the ship's warp core. Lt. Cmdr. Data (Brent Spiner) and Geordi La Forge (LeVar Burton) are unable to locate Picard or Riker and, assuming them to already be on the Starbase, order an emergency evacuation. They set the ship to leave the Starbase and warp to a safe location before it would explode. However, once they are clear of the dock, the failure disappears and the ship sets course for the Bynar system, the planet Bynaus orbiting Beta Magellan. Data, La Forge, and Quinteros realize that the Bynars are still aboard the ship, but there are currently no other working vessels to follow them.

Back on the Enterprise, Riker and Picard leave the simulation to find the ship empty and at warp to the Bynar system, with the ship's controls locked to the bridge. Fearing that the Bynars have taken over the ship for nefarious purposes, they set the ship to self-destruct in 5 minutes and then take the bridge by intra-ship transporter beam and find the Bynars there unconscious.

After canceling the self-destruct, they find the Bynars have uploaded massive amounts of information to the Enterprise computers, but they are unable to decode it. Realizing that Minuet was purposely created by the Bynars as a distraction, Picard and Riker ask the simulation about what is going on as the ship nears the orbit of Bynaus. Minuet explains that a star near the Bynar homeworld had gone supernova and the EMP it emitted would knock out their computer systems, killing the Bynars. They had used the Enterprise to upload their computer information for safekeeping and then planned to download it back to the Bynar computers after the threat of the EMP had passed.

With Data's help, Picard and Riker download the data, and the Bynars recover. They apologize for their actions, having feared that Starfleet would refuse to help, though Picard notes they only had to ask. As the Enterprise returns to Starbase, Riker returns to the holodeck to thank Minuet but finds that without the Bynar data, the simulation has regressed to the expected norm for the holodeck, and while Minuet still exists, she is not the same as before. Riker reports to Picard that Minuet is gone.