The plot is based on a story of Anna, Alyona, Antonina and Alla, four female friends who live in a megapolis. Anna is the owner of a pub «Format A4» which symbolises the first letter of each of the heroines’ names.
Nastya’s character is Antinina – a young lady from a good family who’s been kept under her parents’ wing till she got married. Not being able to forgive her husband’s infidelity, she decides to stay alone, with two children to support. At the age of 28 she starts her own independant life. She takes up some extreme sports and once she gets an opportunity to set up her own business, she becomes an owner of a sport weapon and equipement shop.