Much to her disappointment, the conscientious but inexperienced debt collector, Anna Troupakou, learns the hard way that hers is one of the most difficult jobs in the world, as nearly all her clients respond in the same fashion: "Please, come by on the first of the month!" With this in mind, Anna enlists the help of the compassionate veteran collector, Ilias Magdalis, to show her the ropes; however, there's still one customer who is a tough nut to crack: the suave bachelor, Dimitris Stefanou. Under those circumstances, Anna will have to work twice as hard to get the job done; nevertheless, what happens if the debt collector falls in love with the debtor?