When a chain of volcanic eruptions rips through Europe, the enormous ash cloud blocks out the sun, plunging the continent into a new ice age. An American couple must find their kids and get them out of Paris before it freezes over.

The successful artist and playboy Juan is a notorious seducer of women, through his ability to be just what a woman dreams of: Charming, charismatic, strong, sensitive, sexual. Driven by a restless urge to conquer new women, use them, and throw them away, he has hired his friend Leporello to help create a masterpiece: A filmed database of all the women whose dreams Juan has shattered. We follow Juan and Leporello through 24 compressed hours. Juan seduces the young upper-class girl Anna, but ends up accidentally killing her father, a powerful police commissioner. The two friends run away, but Juan's constant need to seduce new women keeps interrupting their flight. As the police gains in on them, Juan also steals the young bride Zerlina from her groom Masetto, and soon a feverish manhunt is on for Juan.