After the accident with her and Inês, - whose resulting shock made her lose her memory about her past - she was found, adopted by a new family, whom, moments before finding her, had been mourning their own dead child.

Diana doesn't know anything about her real family, until she hears a conversation between her adoptive parents that reveals the secret.

Particularly on Inês, whom she promises that she'll take everything away from her (from her material goods, to her own boyfriend João) and live the life that she believes her sister stole from her.

The series also broadcast in several Latin American countries, including Argentina, Uruguay, Brazil, Bolivia, Ecuador, Paraguay, Peru, Dominican Republic, Costa Rica, and Nicaragua.

In May 2014, Laços de Sangue began broadcasting in Angola on TV Zimbo and in Italy on Rai 1 where it is titled Legami.