Lisa, Sonya and Yana have been friends since childhood and grew up in the same cottage. Usually, a girl has already graduated from college at the age of 25, has work experience and several novels behind her back. Someone even manages to get married and have a child. But Lisa, Sonya and Yana are not going according to plan. They don't know who they want to be yet and haven't found the love of their life yet. They are growing up, they want to be happy, and each is looking for their own way.
Two friends go to St. Petersburg on a business trip that will change them forever. Completely different, like ice and flame, guys fall in love with two Petersburgers equally strongly. Reliable and pedantic Kostya loses his head when he meets an eccentric Game. And the freedom-loving lovelace Sanya for the first time thinks about a real relationship, having met the mysterious cellist Nastya. Love turns the measured lives of Muscovites upside down — and none of them knows how to deal with this new feeling.