At the urgency of the Rubava Hospital, a trauma plan exercise takes place under the guidance of Head Nurse Mera. Information about the explosion in the mine comes to the precisely planned event, for which Mayor Darina Růžičková wants to gain political points. The trauma plan must be stopped, because the explosion collapsed a residential house full of people. Dr. David Hofbauer appears in the ruins of the house among the rescuers and pulls a dying man out of the rubble. David Hofbauer joins the Rubava Hospital emergency room and immediately takes a patient whose life and leg he has to save. A department that has been prepared for training must withstand a real mass accident. He will save someone's life, but he must also prepare for the death of those closest to him.