Three kilos of marijuana. The fact that drug smuggler Eda got away with a suspended sentence is due to her seven-year-old son Robert. Probation officer Klara Sonntag, who knows a home childhood as a convict daughter from her own experience, worries about him at least as much as she does about his tough-looking mother. However, she does not confide in her supervisor what is really going on. Klara finds out that Eda's manipulative partner Nico is actually the problem. When it comes to herself, the social worker throws her principle overboard that everyone deserves a second chance. When her terminally ill father Rudi is about to be released from prison, she wants to avoid meeting them. Meanwhile, Thomas, who has been her secret affair for 15 years, is wondering about Klara: Instead of finally deciding to be together with him, she takes in a nameless four-legged friend that he of all people is supposed to take care of.