Brayan and Andrés lives turn upside down when a nurse about to die decides to confess to Antonia, a woman from high society, that when she assisted her in the birth of her son she made a very small mistake: she exchanged her baby.

Santiago Puerta is a criminalist agent who along with his family must enter a witness protection program of the Prosecutor's Office although fighting with his girlfriend Lina Santana to deliver a dangerous criminal to justice.