In the midst of the political upheaval of the early 1990s in Soviet Union, an Estonian girl and a Russian boy reach across cultural lines to unite over a shared bottle of American soda.

With his last breath Uu's friend entrusts him with the secret of how to go to the past. Uu is an engineer and doesn't believe in miracles, but the trick works. In the past there is a pleasant, eternal summer, long hair, girls and Jenkki chewing gum. In his real life, it is autumn, his friends are bitter, the girls are married and his father is seriously ill. At the end of the day, however, Uu has to decide in which time to live his life - in the summer of the past or in the autumn of the present.

Johannes, a young Ingrian Finn, grows up in Soviet Estonia with his liberal student mother and pro-Soviet grandmother. The boy's life is revolutionized when he experiences first love and his mother decides to leave for Finland.