Three girlfriends, three six-year-old children. And only one place in the best school in St. Petersburg. What can go wrong? Poor but smart and arrogant divorcee Tanya, careerist and wife of a police major Anya and luxurious wife of a businessman Lena - for the sake of the success of their beloved child, each of the girls is ready to do anything, even risk relationships, friendship and self-esteem.