On stardate 4187.3, the "Enterprise" shuttlecraft "Copernicus", carrying Science Officer Spock (voiced by Leonard Nimoy), Communications Officer Lt. Uhura (voiced by Nichelle Nichols), and Helmsman Lt. Hikaru Sulu (voiced by George Takei) are en route to Starbase 25 to deliver a stasis box, a rare artifact of the Slaver culture. The now-extinct Slavers used these objects to carry weapons, valuables, scientific instruments and data. The boxes can detect each other and evidence shows that another device is located near Beta Lyrae.