In 1911, young Pyotr and Petrova meet at Pyotr's estate, bonding over toboggan rides and playful interactions. As they grow together, their innocent friendship blossoms into a deeper connection, marked by a shared first kiss and youthful adventures. However, their world is overshadowed by the onset of war in 1914. The story poignantly captures their experiences against the backdrop of this tumultuous period, reflecting the contrast between the innocence of youth and the realities of the outside world.