NBC operation in Bochum: Green mist rises into the open air during a drilling operation on a construction site. The employees alert the fire department.They, in turn, now have to identify the unclear gas and clarify its origin in order to be able to assess the danger. A captivating situation, a case for modern technologies and expertise. In addition, the wooden hut of a youth home burns late in the evening. Soon the entire hut is on fire and the fire threatens to spread. Will the firefighters – initially with limited forces – be able to bring the situation under control? And: How do you celebrate Christmas on the guard?