A librarian, named Jitka, is asked by an elementary school to temporarily replace an injured seventh-grade classroom teacher. Having given up on teaching once before, she is now determined to overcome the impending obstacles. However, she finds no support from her husband, rather he talks her out of her hasty decision. Coupled with growing marital tensions, Jitka must also cope with a dysfunctional classroom that finds an unfavourable response from her disgruntled parents. When an apparently trivial dereliction of duty almost results in tragedy, Jitka wants to give up. But can she find even one helping hand to lend in this situation?