Sink or Swim (2005)

The story of a group of thirty-somethings who are too old for juvenile games and seemingly too young to enter the adult world.After her divorce, Bára Dusková must work and take care of her kids alone. Ten-year-old Ondrás has little affection for P.E. or, for that matter, any other activity involving movement, and his older sister Marcelka is in the throes of adolescent insolence. So Bára decides that the kids need to get involved in sports.