The ships are at the pier. The workers paint the hull of the ship, carry out repair work, wash the cabins. Engine room of the ship. Dining room. Workers in the hall at the meeting. Composer Leo Weiner reads at a desk in his study on his 70th birthday. Musical compositions of the composer. The symphony orchestra performs one of the composer's works during the concert (synchronously). Composer among those present in the hall and on stage with musicians. Opening of the international exhibition of industrial goods. Visitors to the pavilions of the exhibition. Pavilion of Beijing. Exhibits of the Moscow pavilion. Production processes in the shops of the knitwear factory. A customer tries on a jacket in the sales area of the store. May Day demonstration of workers in Budapest. Party and government members on the podium.