The outside is inside

Marina, a young woman who is pregnant, experiences life through the metals of the peripheral and industrial city where she grew up. Little by little, with the help of her sister Núbia, she discovers a past where the black workers who built the capital were bestialized and excluded. When he meets Maria, a lady who is said to haunt one of the capital's first buildings, something supernatural happens. Now, these women want back what was taken from them.