Henry Jekyll is a troubled man. His wife died of pneumonia. He wants his sister-in-law, but her father forbids any contact. And his experiments into the dual nature of man have yielded a personality-splitting drug that he has tested on himself, changing him into an uninhibited brute who seeks violent and undignified pleasures. Jekyll quickly becomes addicted to the sordid freedom induced by the drug. He can commit the most enjoyably revolting deeds, then return to his laboratory and use an antidote to change back to his original form, so that his lofty persona remains untarnished.

It's New Year's Eve. Larry's parents are at the vicarage dance leaving Larry in charge of the house. Big mistake, because Larry's a party animal and tonight he's going to go wild - with a little help from his friends!

The deranged military and former CIA agent Dean Cage is in a rehab program, trying to forget the traumatic loss of his best friend Scott in Bosnia. When he dates with his girl-friend and Scott's sister, Detective Amy Knight, in a dinning restaurant, he is mistakenly taken as being the CIA agent that is investigating the robbery of the military experiment EX by a man called Sullivan. He is injected with the drug and abducted by the thieves. Amy has six hours to find the also stolen antidote and save Dean's life.

Abelard, a famous teacher of philosophy at the cathedral school of Notre Dame, falls in love with one of his students, Héloïse d'Argenteuil. A sixteen-year old girl raised in a convent, Héloïse has an intellectual curiosity and rebels against the status of women in 12th century Europe. When others begin to suspect their relationship, Heloise's uncle Fulbert and the bishop of Paris work together to put a stop to it. Héloïse becomes pregnant with Abelard's child, and they are married in secret. Abelard struggles for acting against the will of God, yet is unable to escape his love for Heloise.

An American actor in England tries to find love and work.