Four bosom friends who reached the age of thirty suddenly came to the conclusion that if you do not change your lifestyle, then soon they will turn into dull old people. For the past ten years, each of them has built up his relationship with the chosen one, forgetting about all the temptations and pleasures of bachelor life. Friends make a vow that condemns them to live a free life, while getting the maximum pleasure. And here's the first step - at exactly 21:00 each of them should break up with their girlfriends. . .