Agnieszka and Marcin's love is blooming, just like Kasia and professor Wolański. Grandma Solska only dreams of the wedding of her only grandchild… However, Bożenka stands in the way of the happiness of young Zawada. Wolańska decides to radically change her life and instead of sex, this time she focuses on celibacy. Peace of Piotr and Marlenka is disturbed by an unexpected visit ... And when all the heroes meet in one place, the title end of the world will come ...