After reporting the incident to the police, Helga Jonson enters the agency office to hire the Angels to find her business partner and friend, Sylvia Laven, both of who were attacked by two men in masks when they were just out for a run, with Sylvia abducted by them in the process. The Angels learn that the run was in preparation for the two to be part of a stunt event called "Twilliger's Twenty", where Mr. Twilliger of Twilliger's Togs sportswear has hired twenty attractive and fit women to run a fifteen mile staggered start race through the streets of Los Angeles wearing his running clothes, each woman completing the race paid $1,000, with the winner to receive $5,000. Initially only a starting point in their investigation, the Angels and Bosley believe the race has something to do with Sylvia's abduction. By race time, another entrant, Sally Cole, has also not shown up, they further believing Sally also abducted. Beyond the other seventeen runners who may have tried to eliminate the competition to have a greater chance at the first place prize, they have several suspects behind the abductions: Twilliger himself, who seems to be all about the stunt at whatever cost and seems more annoyed with the Angels than concerned when learning about Sylvia's abduction; reporter Millicent Krail, who is openly dismissive of the event in her on air reports; and the two women who miraculously showed up to replace Sylvia and Sally in the race, sisters Mary Craft and Joanne Craft, who end up being obstacles to Kelly and Kris running in the race to have a first hand, up close perspective of the event as it is happening.
—Huggo