The plot of Lost for Words actually has to do with film set communications. Grant is in negotiations to play a movie star appearing in a film directed by a Chinese woman (Zhang). He develops feelings for her, but unfortunately he initially becomes involved with her flirtatious translator. So, if he's to confess his love for the non-English-speaking filmmaker, he must do so through this other woman, whose heart he must first break. I guess he isn't aware that love is a universal language and he could simply just point to his heart and then to her and then they can have a perfect, wordless affair.
Lost for Words was scripted by Jamie Curtis (Spice World) and Oscar nominee Dan Mazer (Borat). Bier is also kind of an Oscar nominee; her last Scandinavian production, After the Wedding, was up for Best Foreign Language Film at the 2007 Academy Awards.