When multi-millionaire Maxwell Abbott dies, he arranges for 5 couples to participate in a winner-take-all automobile rally using his collection of classic cars. The prize: the vintage cars themselves, valued at nearly $2 million. McMillan was an old friend of Abbott's and he's pledged the collection to the police benevolent fund if he wins. It soon becomes apparent that someone is prepared to win at all costs. Forced to use Sally's old car after someone disables the classic Corvette they were supposed to use, the McMillan's set off but not before others have found their vehicles tampered with and someone phones in a bomb threat. The sabotage continues and McMillan wants to call the race off. He gets little support from the others who all have their own reasons for wanting to win the prize. When one of the participants is killed, McMillan finds himself dealing with a case of murder. The motive may not be as obvious as first appearances would suggest.