A group of nine lifelong friends closer to the 40s than the 30s meet to celebrate 1990 New Year's Eve. But when all are reunited, they receive a call phone from Mario, the only one of the friends absent of the reunion, to announce them his attempt to commit suicide. The rest of the group starts a race against the clock through Madrid's streets looking for their friend. In this travel every one of them will remember their golden years of youth in the university, making so a review by the convulsed Spain's history during 70's years of The Spanish Transition, from the politics events to the musical, cultural and social changes in these times.