When fire breaks out at the underground party, chaos takes hold. Dozens are injured and three are missing. With her best friend, Janosch, Nellie sets off to search for her brother, Max, and it's not long before the corpse of the first missing person appears. Tyler, one of the Invisibles, curses the spoiled rich kids who put her family and her home in danger.

Nellie seeks help from an unexpected source in her search for Max, uncertain about who she is dealing with. Anna Mahler gives an interview on TV. Lisa Limberger sees her social project imperiled by the party and by an ambitious CEO, and she fights for her vision. Janosch wants to know about his birth parents. Kaltbrunner receives unexpected help from District Attorney Liebknecht.

Nellie discovers the truth about Janosch's origins, while Tyler and her family are divided about how to handle their guests. An argument splits up Nellie and Janosch, and Janosch breaks a promise, jeopardizing Nellie's best chance at finding Max. Lisa falls in love and finds new allies. For Anna Mahler, the interview pays off differently than expected.

Nellie is on the brink of finding Max when another body is discovered. Meanwhile, Janosch also has to grapple with death. Lisa, under pressure as the city is withdrawing its support, places all her hopes on the Inspire Project. And Liebknecht finds who Kaltbrunner is looking for.

Because Tyler is also searching for someone, she and Nellie join forces, while Janosch makes a discovery about a relative. Frank Limberger wants to replace Lisa at the company, so Lisa turns her back on her family and company. Liebknecht informs Kaltbrunner that she is on the brink of solving the case. Pressure on Anna Mahler is increasing.

Nellie and Tyler put their lives at risk to save someone. It is still unclear who is responsible for the deaths. A new clue leads to the terminally ill Liljana, who would do anything for her son. Nellie and Janosch attempt to reconcile. Lisa takes on a new role at the company. In the end, someone will see their life go up in flames.