Martin Sheen and Rooney Mara are set to join Stephen Daldry's next project "Trash" at Working Title Films, PeaPie Films and 02 Filmes.
The story follows three poverty-stricken boys (Rickson Tevez, Eduardo Luis and Gabriel Weinstein) in a Third World country who discover something mysterious and dangerous in a city dump.
Sheen will play Father Juilliard, and Mara will play Olivia, an NGO worker. Wagner Moura and Selton Mello also star.
Richard Curtis is adapting the script based on Andy Mulligan's 2010 novel. Shooting is slated to begin in Rio de Janeiro early next month for a May 2014 release.