Documentary about the trajectory of the Brazilian rock band Cachorro Grande, created in Porto Alegre, State of Rio Grande do Sul, in 1999 and imploded in São Paulo, the exact year they would have celebrated their 20th anniversary. As is the script of every self-respecting rock band, Cachorro Grande lived and survived amid contrasts and extremes. From being the greatest promise of Brazilian rock’n roll at the beginning of this century, opening shows for the Rolling Stones in Brazil, to going through open fights that shaped the band’s style and created fissures, culminating in the threat of its disbandment.