Amsterdam: the sex and drugs capital of the world, where weed is legal and smoked alongside coffee in one of the city's many koffiehuises. It's Mike's stag-do - one final weekend of debauchery before marrying - and along with four of his friends, he intends to paint the town red. Unfortunately, they're not the only ones eager to paint the town red; six evil hamsters escape the delivery-truck and stumble upon a contaminated batch of space-cake. With the euphoria they experience comes a side-effect none of them could have anticipated: The hamsters start to grow.

Hamsterdamned! is the action-packed and comical tale of gigantic rodents and sex-midgets, of one-legged prostitutes and inept Dutch policemen, of camaraderie and one man's fight to stay alive so he can marry the woman of his dreams.