Two families try to make the best of a bad situation as they suffer through a crippling heat wave in this neo-realistic drama, featuring a primarily non-professional cast. Tali (Mercedes Moran) is minding four small children with little help from her husband, who is preoccupied with the opening of hunting season, as a record hot spell grips Argentina. Things aren't much better for her cousin Mecha (Graciela Borges), who is looking after four teenagers and a husband (Martin Adjemian) who can hardly be bothered to help out, but Mecha <I>does</I> have a pool, even if it hasn't been cleaned in quite a while. Tali and her brood end up spending much of the summer with Mecha as the town is riveted by the appearance of the Virgin Carmen on the city's water tower, and a series of thunderstorms add an awful humidity to the summer's unbearable heat. While seemingly improvised, La Cienaga was actually carefully scripted by Lucrecia Martel, who won a screenwriting award at the 1999 Sundance Film Festival prior to making her directorial debut with this feature.