Season 1 of "O Negocio" consists of 10 episodes and was broadcast from March 31 to May 26, 2013, on Rede Globo. The show was a huge success, attracting a large and dedicated audience. The season follows Guilherme, a young and ambitious entrepreneur who starts a small business with his friends. However, things take a turn for the worse when they get involved with a group of corrupt businessmen and politicians.