Everything in Irka’s life is going well, even two gentlemen are planned. Well, Vanka Granovsky has been carrying her briefcase almost since the first grade, but Sapozhkina likes not him, but Matvey, a handsome man and an athlete, probably a future Olympic champion. And even though Irka has many rivals, she will be able to get around them. Now the date has already been set... One thing prevents her from going about her business - her younger sister Alenka. Oh, how can Irinka look after her sister, charm Athos, and not lose her best friend?