When Hong Kong Inspector Lee is summoned to Los Angeles to investigate a kidnapping, the FBI doesn't want any outside help and assigns cocky LAPD Detective James Carter to distract Lee from the case. Not content to watch the action from the sidelines, Lee and Carter form an unlikely partnership and investigate the case themselves.
A gang of thieves calling themselves the Santa Claus Gang are wreaking havoc, and the police can't keep up. Police Captain Gilbert is distracted by a Chinese reporter writing a story on his squad, and taxi driver Daniel is in the midst of a relationship crisis. After a string of mistakes in which the thieves outsmart the police time and time again, Daniel and his super-taxi pitch in.
Coy "Cannonball" Buckman (David Carradine) and his blazing red Pontiac enter the Trans-America Grand Prix, an underground road race spanning the continent in which there are no rules, no speed limits and no heed for the law. En route, Buckman jockeys with an international ensemble of racers for a $100,000 purse. But there are none more important than Cade Redman (Bill McKinney), his direct competition for a guaranteed spot on the elite Modern Motors racing team.
In a boorish future, the government sponsors a popular, but bloody, cross-country race in which points are scored by mowing down pedestrians. Five teams, each comprised of a male and female, compete using cars equipped with deadly weapons. Frankenstein, the mysterious returning champion, has become America's hero, but this time he has a passenger from the underground resistance.
After security expert Ray Breslin is hired to rescue the kidnapped daughter of a Hong Kong tech mogul from a formidable Latvian prison, Breslin's girlfriend is also captured. Now he and his team must pull off a deadly rescue mission to confront their sadistic foe and save the hostages before time runs out.
Tiffany, Charlie and Vernon are con artists looking to up the ante from their typical scams. They figure a good way of doing this is taking down Dean "The Dean" Stevens, a well-known cardsharp, in a rigged game. However, they first need enough money to enter a game with Stevens, so they decide to strike a deal with fellow crook Larry Jennings to scam a local gangster -- which turns out to be a bad idea.
Johnny Kovak joins the Teamsters trade-union in a local chapter in the 1930s and works his way up in the organization. As he climbs higher and higher his methods become more ruthless and finally senator Madison starts a campaign to find the truth about the alleged connections with the Mob.
A woman who has recently discovered that she is the daughter of Angelo, a major mafia boss, decides to wreak vengeance when he is killed by a hitman. She's aided by his faithful bodyguard, with whom she soon falls in love.
Frank Leone is nearing the end of his prison term for a relatively minor crime. Just before he is paroled, however, Warden Drumgoole takes charge. Drumgoole was assigned to a hell-hole prison after his administration was publicly humiliated by Leone, and has now arrived on the scene to ensure that Leone never sees the light of day.
A tough cop's (Sylvester Stallone) seemingly frail mother (Estelle Getty) comes to stay with him and progressively interferes in his life. She buys him an illegal MAC-10 machine pistol and starts poking around in his police cases. Eventually, the film draws to a denouement involving the title of the film and the revelation that even though she seems frail and weak she is capable of strong actions in some circumstances, i.e. when her son is threatened by thugs and she shoots herself in the shoulder.