Kacper, a beloved history teacher, begins to lose his sight. The medical diagnosis leaves little hope; due to a genetic disorder, chances are high that he's facing permanent blindness. Initially heartbroken, he attempts to hide his health problems from his bosses. His only desire is to keep his dream job and to help his students prepare to the final exams. The only person knowing about Kacper's problem is his best friend Wiktor. Fighting his dreary fate, Kacper becomes very close with his co-worker Ewa, and at the same time he tries to help a rebel student Klara, who hides a secret of her own.