 Documentary about a peculiarity of Carnival in Bahia: the Trio Elétrico (Electric Trio). It was invented in the 1950s: one Carnival day, two musicians, Dodô and Osmar, decided to play on the top of an old Ford, during the carnival, and people started to follow the car, dancing. Now it became an institution of Carnival in Bahia, with musicians playing on top of big trucks, with a multitude of people following the music around town.