After returning from an anti-war demonstration, Gary (Danny Dyer), Sarah (Kierston Wareing), Saffron (Lois Winstone), Pru (Emily Beecham) and Derek (Jimi Mistry) stop in the country.
Derek and Saffron discover a metal hatch in the middle of the forest, and they decide to explore inside.
Gary, Pru and Sarah search for their missing friends and follow them into the hatch and find themselves locked in when it closes behind them.
Critical reception for The Basement has been negative, with BeyondHollywood.com writing that the film could have been "enjoyable trash, though sadly its mind-numbing, soul-destroying lack of energy or originality drags it back down into the mire.
There isn’t a single line, performance, camera movement, idea, scene, shot, or piece of editing that warrants any kind of praise or attention.