Veteran buttoned-down LAPD detective Roger Murtaugh is partnered with unhinged cop Martin Riggs, who -- distraught after his wife's death -- has a death wish and takes unnecessary risks with criminals at every turn. The odd couple embark on their first homicide investigation as partners, involving a young woman known to Murtaugh with ties to a drug and prostitution ring.
A bounty hunter helps out the wife of a bail-jumper after her child is kidnapped by neo-Nazi types.
Deputy Langley tracks a kidnapped girl to an abandoned ghost town. However, the town is not abandoned, but haunted by the spirits of an outlaw, Devlin, and his gang, who hold the equally deceased townspeople hostage until the outlaws can be killed by a lawman.
Cocky researcher Sebastian Caine is working on a project to make living creatures invisible. Determined to achieve the ultimate breakthrough, Caine pushes his team to move to the next phase — using himself as the subject. The test is a success, but when the process can't be reversed and Caine seems doomed to future without flesh, he starts to turn increasingly dangerous.