Enterprise (a flying vehicle that travels to other galaxies at amazing speeds) stops at a space station for repairs.After everyone else reaches the starbase (the space station), the problem mysteriously corrects itself, and the ship disappears.The four Bynars (beings with computerized brains) that are doing maintenance seem worried.Picard and Riker manage to get into the Bynarus file and restart the computer.As the crew on the starbase try to figure out a way to recover the Enterprise, the captain and his helper discover what has happened.