Roro (Fares Fares) works as an attendant in a Stockholm park with his best friend Måns (Torkel Petersson) and dotes on his Swedish girlfriend Lisa (Tuva Novotny). Their romance is kept secret because is parents would disapprove. In fact, his family believes he's still eligible and they devote much of their time to finding him a Lebanese bride. One such contender Yasmin (Laleh Pourkarim), conspires with Roro to dupe their families with a bogus engagement. Meanwhile, poor Måns just can't get it up, and he and his girlfriend turn to an increasingly desperate series of cures.A massive hit in Sweden, The Best Man's Wedding (Jalla! Jalla!) combines rude energy and often ruder humour in a tale of culture clashes and sexual crises.