It is the "Father-Son Big Mouth Bass-Off" and the boys learn that their father is afraid of fishing. Using a wacky invention, the boys go into Doc's memory and find out that while staying with his Oddball Uncle Oliver one summer, four-year-old Doc fell into the river while fishing. The boys, with Marty tagging along, head back in time to prevent the accident thus eliminating Doc's fear of fishing. The boys prevent the accident but create a new one, and Marty falls into the river. When little Emmett Brown casts his line, it gets caught on a low flying stunt biplane. When the pilot lands, Emmett is heralded as Daredevil Brown. Little Emmett becomes very famous doing crazy stunts around the country. When he arrives in Hollywood, movie producer D.W. Tannen proposes a very dangerous stunt (the ol' barrel over the waterfall stunt) but promises that a dummy will take Emmett's place. In reality, Tannen plans on keeping Emmett in the barrel for the "realistic" look but Marty and the boys foul up his plans and save Emmett. When Marty and the boys head back in the future, Doc is ready to go to the Bass-Off.
(Synopsis courtesy of Wikipedia)

Television

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