The Kazakh steppes, near the Baikonur space station. Young Iskander, known as Gagarin, is not only crazy about Baikonur and the vastness of outer space, but also deeply smitten with the beautiful French astronaut Julie Mahé, whose journey to the stars he wistfully follows on television. When Julie literally "falls from heaven" in a small space capsule, it’s Iskander who finds her unconscious. Since Julie can no longer remember anything, Iskander is able to pretend that they are engaged to be married... But what if his lie is discovered?