In New York in 1995 Dr. Richard Jacks is a creator of perfumes. Thus he spends his days inventing new colorful and well smelling potions and certainly caring for his girlfriend Sarah Carver. But when he discovers that his greatgrandfather, called Dr. Jekyll, was a scientist with revoluntionary discoveries, he tries to follow the footsteps of his ancestor and creates more and more delicate potions until one of them converts him into a spectacular superwoman: Helen Hyde. Knowing that Richard has no clue of her existence Helen enforces a professional career at the back of her 'creator'.