While Picard's is running out of excuses to decline Admiral Nakamura's invitation to a Starfleet flag officers banquet, Geordi's having difficulties with installing a new warp core. Dr. Soong's dream program gives Data his first nightmares; Troi advices against stopping it. She suggests therapy and a temporary interruption when the visions disturb his internal chronometer so he oversleeps, and spontaneously occur while on duty. However one element proves a real organism, so it's decided that Geordi and Picard use a device that allows them to enter Data's dreams and interact with him and other characters. Written by
Did You Know?
One of the few Trek episodes edited by the BBC. The scene in the turbolift when Data stabs Deanna was trimmed to remove the actual amount of stabbing. It had caused some upset among US audiences. See more
The 24th century seems to use the metric system exclusively. They use Celsius and meters throughout the whole series. However, Dr. Crusher says, in the senior staff meeting, that "We'll collapse into nothing but a few pounds of chemicals", but the metric unit for mass is the gram. See more
Counselor Deanna Troi
[citing Sigmund Freud
Dreams are the royal road to the knowledge of the mind.