The Brads!

The plot is simple. For some never explained reason hundreds of young dimwitted males called Brad start arriving and hanging about in a small town.

A small incident starts an attack on another group of visitors, along with the local residents. As all of the Brads are apprentice hair stylists, their attacks focus on cutting, blow drying, perming and otherwise fashioning their unfortunate victims' hair. (bald folk simply have their heads sprayed with silver paint and covered with hundreds and thousands) Scenes of terrified citizens being pursued by the hair drier and scissor brandishing Brads throughout the normally quiet seaside streets abound.

The vulnerable visitors hole up in a motel, as the Brads break in, menacing the cowering visitors, and are only stopped at the last possible moment by a great rain storm of wigs falling from the sky (see Magnolia's rain of frogs for similar)