Plot
Daredevil motorcycle rider Evel Knievel stars as himself in this fictional story. The film opens with Knievel sneaking into an orphanage late at night to deliver presents: Evel Knievel action figures. One of the boys casts away his crutches, telling Knievel that he'll walk after his accident just as Knievel had.
Knievel then prepares for another of his stunt jumps. We are introduced to his alcoholic mechanic Will Atkins (Gene Kelly), who was a former stunt rider himself before his wife died, driving him to drink. While signing autographs, Knievel is ambushed by photojournalist Kate Morgan (Lauren Hutton), who has been sent to photograph the jump: if Knievel is killed, it will be a great story.
Before I make the jump, there's something I'd like to say to you, that's been bothering me for a long time.
I go to Indianapolis every year to see the Indy 500. I go there with friends to drive and race. Every year when they go there to qualify, they usually have to go as fast as they possibly can to get a front row position. They put nitro in their cars sometimes, instead of the fuel that is intended to be in the cars so that the cars will go faster ... and they do, for five or ten laps. And then they blow all to hell.
And you people, you kids, if you put nitro in your bodies in the form of narcotics, so that you can do better, or so that maybe you think that you can do better, you will for about five or ten years, and then you'll blow all to hell.
—Evel Knievel, speaking to the audience just before the first jump
As it happens, Evel does crash while attempting the stunt, and though badly injured, survives. He berates Morgan, announces his retirement, and is taken to the hospital.
While rehabilitating, Knievel resists all attempts to get back on the horse, including those from Jessie (Marjoe Gortner), a former protégé with mysterious backers who want Evel to do a jump in Mexico. Eventually, though, Knievel relents and agrees.
A subplot develops when Will's estranged son Tommy shows up from boarding school, and asks to join the tour. Will, who is reminded of his dead wife, is cold to Tommy, leaving Knievel to show the boy kindness. Likewise, Kate reappears, apologetic for her previous motives, and now wishes that he will never stop jumping.
Meanwhile, Jessie's benefactor is revealed: drug lord Stanley Millard (Leslie Nielsen). Millard (without Jessie's knowledge) plans to cause a fatal accident during the jump. He will then have Knievel's body transported back to America in an exact duplicate of the tour trailer, but one that has a massive supply of drugs hidden in the walls.
Will, however, stumbles onto the plot, is drugged, and sent to a psychiatric ward under the control of the corrupt Ralph Thompson (Dabney Coleman) to prevent him from spilling the beans. Evel sneaks into the ward late at night when Will has dried out, but all Will can remember is that someone knocked him out. Knievel leaves him there to keep whoever is behind the plot in the dark.
As Knievel prepares for the jump (down a massive ramp and over a fire pit), Jessie—hopped up on drugs—confronts Evel, claiming that he will prove who the best jumper is. Jessie knocks Evel out and dresses in Knievel's signature red, white, and blue outfit. Jessie then successfully makes the jump, however, the bike has been sabotaged and he is killed as he lands (footage from a real Knievel crash was used). While the body is taken away for the drug smuggling plot, Evel wakes up, gets on another bike, and goes to free Will.
After breaking out of the psych ward, the two find the mockup trailer, in which, by an amazing coincidence, both Tommy and Kate have been taken hostage. Pursuing the truck, Will and Evel decide to split up: Will will disable the semi, Evel will lead off the gun-toting drug lords riding guard in another car.
At the end of several extended chase scenes, the drug lords are defeated, Will and his son are reunited, and Kate has fallen head over heels for Knievel. The film ends with Knievel performing a daredevil jump over a pit of fire, this time successfully.
The end jump is stopped in a freeze-frame shot and a color matte, similar to that of the one that appears in the opening credits, appears over Evel in mid-air. The song that plays over the opening credits also plays over the film's end credits.
