Barbra Streisand and Ryan O'Neal attempt to recapture the screwball spark of What's Up, Doc? in the labored farce The Main Event. Streisand plays Hillary Kramer, a bankrupt perfume executive who discovers that one of her tax write-offs from more prosperous times was the ownership of prizefighter Kid Natural (Ryan O' Neal). Kid Natural is now a driving instructor who wants nothing to do with boxing, but Hillary is determined to resurrect the Kid's less-than-spectacular boxing career. She installs herself as the Kid's manager and tries to get him in shape to go the distance. Along the way, the two fall in love.
~ Paul Brenner, All Movie Guide