Z10 is one of the oldest and most traditional fishing colonies on Brazil's coast. The film narrates the story of Zezinho, a fisherman from this historic community, whose life undergoes drastic changes due to escalating marine pollution. With the decline of fish stocks, Zezinho and his colleagues face a crisis of livelihood and identity. But, In an inspiring turnaround, they reinvent their practices, turning into guardians of the ocean. They not only find a new means of subsistence by 'fishing' for trash, but they also emerge as central figures in the fight for environmental preservation.