Unknowingly, Geordi energizes back aboard the U.S.S. Enterprise carrying a contagious, deadly contaminant that begins to infect the entire Starfleet crew, making them feel and act as if they were intoxicated and mentally unstable.

While Dr. Crusher searches for an antidote, chaos erupts when Wesley takes control of the ship.

Finally, Lieutenant Commander Data and Chief Engineer MacDougal, fighting the effects of the ailment, manage to get control of the ship. While Dr. Crusher administers the remedy to the mysterious contaminant, the crew, with Wesley's assistance, diverts the ship from further danger when a piece of the star's surface breaks off and heads directly toward the U.S.S. Enterprise. Captain Picard commends his crew for a job well done.

Memorable Quotes:
[trying to seduce Data]
Lt. Tasha Yar: You are fully functional, aren't you?
Lt. Cmdr. Data: Yes.
Lt. Tasha Yar: How fully?
Lt. Cmdr. Data: In every way of course. I am programmed in multiple techniques. A broad variety of pleasuring.
Lt. Tasha Yar: You jewel. That's exactly what I hoped.

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Lt. Cmdr. Data: If you prick me, do I not... leak?

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Dr. Crusher: It is definitely like alcohol intoxication. The same lack of good judgment. For example, right now I find you extremely, extremely... of course we haven't time for that sort of thing.
Capt. Picard: What Sort Of Thing?
Dr. Crusher: Oh god, would I love to show you.
Capt. Picard: Doctor, there must be a cure, some formula. Hu huhuhu hu
[giggling uncomfortably]