A woman named Lexi sits unhappily at a bus stop when a homeless man named Michael sits down next to her with a big smile. When Lexi asks why he's smiling, Michael says he sells smiles for a living. Lexi declines but Michael insists she take the smile. Lexi is skeptical but agrees to buy a smile from Michael for one smile in return. After their exchange, Lexi leaves with a new smile and perspective on the value of smiling.