A young Polish filmmaker sets out to find out what happened to Mateusz Birkut, a bricklayer who became a propaganda hero in the 1950s but later fell out of favor and disappeared.A young Polish filmmaker sets out to find out what happened to Mateusz Birkut, a bricklayer who became a propaganda hero in the 1950s but later fell out of favor and disappeared.A young Polish filmmaker sets out to find out what happened to Mateusz Birkut, a bricklayer who became a propaganda hero in the 1950s but later fell out of favor and disappeared.