The mysterious death of her childhood friend, real estate developer Oliver Griebnitz, turns lawyer Susanne Kröhmer's world upside down. The senator for urban development steps down, splitting the ruling coalition in city hall and leading to early elections for the Berlin city council. Susanne, a council member for the conservative CDP, decides to run for mayor on the spur of the moment. She's the..

Susanne is pregnant and the timing couldn't be worse! She woos campaign adviser Lassnitz away from the Degenhardt camp, who puts a team together for her and manages to turn the news of Susanne's pregnancy into campaign gold against her will. Investigative journalist Alex - an old friend of hers - gives Susanne a valuable tip: Degenhardt is planning a new industrial zone on the site of the old city..

Maik tries in vain to make up with Susanne. Pressured by Degenhardt, Susanne's father Karl-Heinz is gathering votes for the Berlin Tec-City project. Susanne finds out about it and successfully whips her party's dissenters into line, winning the vote. Now she knows she can't trust her father anymore...

Susanne's father has a falling out with Degenhardt and promises to support Susanne one hundred percent from now on. Can she really trust him? A Degenhardt spy is unmasked on her campaign team. Susanne and spin doctor Lassnitz deftly use his inside knowledge and turn the tables on their rivals. Alex is spotted committing a burglary and has to go into hiding - after spending a night in bed with Susa..

Still suffering from the loss of her child, Susanne manages to calm a prison riot. Alex, who has done some digging into the Oliver Griebnitz story, tries to lure his father out of reserve with a made-up eyewitness story. Finally, Susanne learns a bitter fact from her mother: Karl-Heinz Kröhmer isn't her biological father - Frank Griebnitz is.

Just before the decisive TV debate, Susanne receives a video from Griebnitz proving Degenhardt, Karl-Heinz Kröhmer and Griebnitz commissioned a contract killing 20 years ago. Even though Lassnitz advises against it, Susanne decides to show the video during the live debate. Degenhardt is exposed, and Karl-Heinz Kröhmer is devastated by Susanne's revelation. Susanne wins the election - only to recei..