Dom of Blue is a contemporary drama series set in vibrant Madrid, Spain. The show follows Mario, a 29-year-old Black man from New York, who was adopted as a teenager by the powerful and influential de la Vega family. As Mario navigates the labyrinthine complexities of wealth, legacy, and identity, he unexpectedly falls for Lucía de la Vega, a stunning 27-year-old Spanish socialite who is also the youngest daughter of the family. Their passionate romance is tested by cultural clashes, family expectations, dangerous secrets, and external rivals from their complicated pasts.