After her fiancé is killed and she is almost sexually assaulted, a woman becomes an avenger of the night, seeking to kill all the dangerous men who would harm women. Meanwhile, her fiancé's cop brother also seeks to bring down the biker gang associated with the murder.
A baffling movie for which the production started in the late '70s/early '80s. The project was eventually completed in the mid-'90s, but the movie wasn't released until 2005.
Yes, it's quite unmemorable. Generic and bland and slick.
If anybody says it's not that bad, put it side-by-side with other things from the approximate era like Die Hard, Terminator 2 or Heat, and see how it fares. Or even another one of Donner's own - Lethal Weapon.