Every week, “Factor ADN” presents three stories about DNA and its many scientific uses: adoptions, abandonments, siblings who have never met, illegitimate children...  For each case, at least two of the protagonists involved tell their story from their personal point of view. Their stories are cross-cut with a parallel narration from different locations with a main character acting as the guiding thread, allowing the audience to discover the various paths our protagonists have taken. The program's final objective is to reunite the protagonists.