Three girlfriends, three six-year-old children. And only one place in the best school in St. Petersburg. What could 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, friendships and self-esteem.