In Spring is a masterpiece of Ukrainian cinema avant-garde, a non-fiction film made by Mikhail Kaufman, Dziga Vertov's brother and co-author, along the lines of the avant-gardist theory of «cine-eye». The film shows Kyiv in 1929, almost unknown today. Pictures of wakening city, its resurging life resonate with lyrical views of reviving nature. Kaufman's attentive camera dwells deliberately on smiling faces of children, lyrically depicting a declaration of love to Kyiv. In In Spring, Kaufman used the method of «hidden camera» for the first time.