The story is centered in an extravagant local, half cabaret specialized in tango, half illegal bar for social gathering and gambling party, which give the name of Tango. It developed the adventures in which involve the main characters in the series and making exuberant parades in the gallery of characters appearing aristocrats, beggars, prostitutes, players, secretaries and politicians. Between the actual adventures appears in flashback the remembers of the owner of local, Marcos Galán, and him life as young emigrant in Uruguay, her raise as rogue playboy and come back to Spain converted in a so called “Indiano“.