Electra (1996)

The discovery of a miraculous serum capable of giving youth, health and superhuman powers arouses the interest of Marcus, a megalomaniac billionaire bound to a wheelchair. He sends his assassins to seize it. But the discovery is no longer in the laboratories. While the young man tries to escape with his girlfriend, the beautiful and mysterious Electra comes forward, determined in her turn to get the serum. And the fact that the beneficial effects are now transmissible only through sexual intercourse does not worry her.