On September 5 and 6, 1975, Argentine rock duo Sui Generis gave their final concerts at the Luna Park Stadium, an iconic venue of Buenos Aires City, comparable in importance to the Madison Square Garden in New York. Never before a local group had sold out over 25 thousand tickets in a matter of hours...and this, despite their brief lifespan (1970-1975). The two shows were recorded and filmed and became a double live album and a documentary.