When you need butterflies for your wedding or birthday, there’s only one woman to call: Emily Mariposa. It’s what her business ‘Feeling Butterflies Inc.’ is all about – and right now, business is good! In fact it’s so good, Emily and her business partner Adam are struggling to keep up with demand.

Freddie is an inept bank clerk with no future. His only hobby is collecting butterflies, which gives him a feeling of power and control that is otherwise totally missing from his life. He comes into a large sum of money, and buys himself a country house. Still unable to make himself at ease socially, he starts to plan on acquiring a girl friend – in the same manner as he collects butterflies. He prepares the cellar of the house to be a collecting jar, and stalks his victim over several days.