朋友的妈妈When Nobody Sees Us is based on the Sergio Sarria novel of the same name.　　Set against the dramatic backdrop of the Spanish Holy Week celebrations, the series is a thriller led by two policewomen trying to solve a series of crimes in the Andalusian town of Morón de la Frontera, in the political and cultural region of Seville’s so-called ‘deep Spain,’ which is home to one of the biggest international U.S. military bases.　　Lucía Gutiérrez is a sergeant of the Spanish Civil Guard investigating the bizarre suicide of a neighbour and strange events that have taken place during the first Holy Week float processions. Magaly Castillo is a Special Agent of the Military Police of the United States Army sent to find out the whereabouts of a missing American soldier who seems to be linked to the shady business of Colonel Douglas Hoopen, head of the Air Force Base, and an underhanded marine, Lieutenant Andrew Taylor. They soon discover that the two investigations are connected.