In Madragoa, Zé Luís, a man of the people devoted to his work, is in love with Clara, the daughter of Santana das Carnes, his godfather and protector, who intends to marry her to D. Eusébio with the intention of financing his business. When Santana discovers the romance, he fires Zé Luís and forces him to break it off, convincing him that he owes his marriage to Margarida, a young woman of the same upbringing. Zé Luís finds employment at the docks, Margarida dies of illness, Santana goes bankrupt... Zé Luís supports him with initiative and money from his father, who has meanwhile returned from Africa, and ends up marrying Clara.

Alberto has a vocation to sing, but at home run counter to their ambition. The father, owner of a shoe shop either, the force, that he work in the shop. / Alberto tem vocação para cantar, mas em casa contrariam a sua ambição. O pai, dono de uma sapataria quer, à força, que ele trabalhe na loja.

Popular in the riverside area of Porto, Micas raised her daughter, Madalena, at the cost of sacrifice, as her father emigrated to Brazil. With a happy voice, Madalena works on unloading the coal, seeing her loves thwarted by her humble condition. Barata, another typical figure who makes a living from expedients, helps Madalena's father - meanwhile returned, to "register" her - in a kidnapping plan capable of facilitating her reconciliation with Micas, who is reluctant... Things get complicated, but happiness ends up triumphing.