When newlywed Don and Pat Carter's automobile breaks down in Ridgeview, Ohio, they have lunch at the Busy Bee Cafe while they wait for repairs to be made. The booth they sit in has a fortune teller machine on the table that answers yes or no questions for a penny each. Don, played by Shatner, asks the "mystic seer" if he is going to get a promotion at work. The card says "It has been decided in your favor." Don calls the office, and learns he has been promoted. Because of this initial success, Don asks the seer if their car will be fixed in the promised time, and receives the answer "You may never know." Questioning the seer on this point produces eerily relevant answers, leading to the prediction that it is unsafe to leave the diner until 3 p.m.

Don accordingly stalls for time, but Pat argues that the seer cannot genuinely predict the future and eventually convinces him to leave a few minutes before 3. The couple is almost struck by a car while crossing the street. A nearby clock shows it is 3 p.m.

Don wants the seer to tell him where they're going to live and asks the seer yes/no questions to narrow down the answer. Pat finally breaks down and tells Don that whether or not the seer can really tell the future doesn't matter, only Don's obsession with its predictions. She argues that it is better for him to make his own future than to be controlled by what the seer tells him.

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