Since mid 70's, a military government banned most of rock songs in Argentina. Rock was the only way of telling what was happening. When the 80's began, democracy came back to the country. But, before that, a debilitated government allow a big concert a-la Woodstock, but without that magic. There was made in a stadium transformed in a rock place. This movie is a sequence of the four weekends that made that show. There's music from the beginning to the end. Some interviews with the musicians and the crowd complete an historic event. If the concert had been done in these days, there would not be a film, but a TV special.