The film follows two avid science fiction fans (O'Dowd and Wootton) and their snarky mate (Kelly) as they attempt to navigate a time travel conundrum in the middle of a British pub, where they meet a girl from the future (Faris) who sets the adventure in motion.

On its television premiere on BBC Two on 1 August 2010, the film was dedicated to its director Gareth Carrivick, who had died a month before its release.

That evening, Ray and his friends Pete (Dean Lennox Kelly) and Toby (Marc Wootton) go to the cinema, later complaining about the film on their way to the pub.

At the pub, they compose a "Letter to Hollywood" with tips on how to stop making bad movies, on the back of a sheet from Toby's "brilliant ideas" notebook.

Ray meets an American girl named Cassie (Anna Faris), with dark brown hair, who claims to be a member of a future organisation that fixes "time leaks", who warns Ray about "Editors": people who travel in time to kill famous artists immediately after they've created their greatest work, to avoid a later decline in quality.

Strange sounds cause them to run for the toilet again, so that they miss seeing a building-sized ant eat a man, who is pushing a shopping trolley with a loud squeaky wheel.

An earlier version of Toby is discovered writing in a page of his notebook, and they reason that whatever was on the other side of that piece of paper is how they became famous.

As they walk down a path towards a railway arch, Ray tells Pete that it is probably all over, because now that the page is destroyed none of the night's events should have ever happened.

She says they have only fourteen hours to save the earth (a reference to the film Flash Gordon), and urges them to accompany her to a parallel universe.

The opening credits appear in outline block letters in light blue against the background of space, in the same style as the Superman films.

[4] Many of the promotional items for this movie feature a stylised image from the film, of the male leads, standing in a similar pose to Michael J.

"[7] The review for the Daily Mirror's verdict was, "This engaging comedy feels like a stretched-out TV pilot, but is nicely put together, with enough laughs to make a refreshing change from usual Brit film fare.

"[8] The Irish Times described it as a "mildly diverting yarn" but was critical of the small scale of the film and the apparently limited budget.