A newly graduated nurse Tuulikki starts a job in a closed ward of a psychiatric hospital. Her innocence is being challenged by both her colleagues and patients. A new patient Katariina has a fire burning deep inside of her.

Police Inspector Renko tries to solve the case of three bodies found in Moscow's Gorky Park but finds his attempts to solve the crime impeded by his superiors. Working on his own, Renko seeks out more information and stumbles across a conspiracy involving the highest levels of the government.