The story of the celebration of the historic three-day Havana Jam festival at the Karl Marx Theatre, in Havana, Cuba, from March 2-4, 1979.

The story of students of a high school in Havana in the 60's, where love, politics, and moral contradictions appeared. A shy country boy gets caught between the peer pressure of his buddies and his love for an overweight, strong willed but likable girl.