The entire unit has to deal with a dangerous substance, and not everything goes smoothly. Roope vents his frustration on the new fire master Krista. Mikael has a hard time facing his aging. Pietu won't leave Nella alone.

Nella and Pasi are forced into a high crane for rescue missions. The shared experience of a challenging task brings them even closer. Krista will receive an honor on the rescue service's anniversary. Roope has challenges adapting to new family arrangements.