Although it was definitely not love at first sight, over time Olaf Hintz and the Kuntze family have formed an endearing, albeit quirky, household. Their unconventional yet warm living arrangement navigates the trials of mismatched personalities and unexpected friendships. Just as harmony is settling in, the doorbell rings, disrupting their newfound equilibrium. Standing on the doorstep is Elfie, Hintz's estranged sister, bringing with her a whirlwind of secrets and surprises. Her arrival promises to alter the dynamics of this uniquely blended family.

Hintz has somewhat recovered from the shock and the apartment fire while the Kuntzes have squeezed together in their small home to accommodate him. It's not exactly cozy, but Hintz remains optimistic. He hopes to return to his newly renovated apartment in Charlottenburg within a few weeks. As they adjust to their cramped living arrangements, the story unfolds, offering a blend of resilience, hope, and the comedic adventures of managing under one roof. This unexpected living situation challenges their relationships and reveals hidden strengths, creating a touching and humorous narrative about finding comfort and understanding in the most unlikely of circumstances.

Despite the prohibition, Hintz and the Kuntzes remain in Jacqueline’s apartment with nowhere else to go. Their new mantra is to stay under the radar, which isn't exactly Hintz's strong suit. What starts as an innocent conversation at his insurance company spirals into a moment of impending doom for Hintz as he's faced with shocking news. With mounting tension and whispers of trouble, navigating this new challenge becomes a battle of wit and discretion. They must manage to keep a low profile, or the chaos that seems to follow Hintz may catch up with them.

Trixie has hit rock bottom. She's quit her apprenticeship as a pastry chef, just like she's abandoned everything else in her life. Tension is high in the shared apartment as Hintz has no sympathy for her actions. Once again, chaos reigns: no apprenticeship, no home, no money, and no prospects.

Trixie's cake startup is off to a promising beginning, and the entire family is involved, ready to support her venture. However, what they really need now are more customers. To address this, Hintz dives into Berlin's trendy café scene, attempting to attract a new clientele. His attempts, though earnest, are hampered by his overestimation of his own charm. As he clumsily navigates this vibrant setting, unexpected comedic moments ensue, testing his patience and persistence. Trixie's journey highlights the ups and downs of entrepreneurship, family bonds, and the sometimes hilarious challenges of winning over new customers.

Trixie faces the daunting challenge of finding an affordable apartment in Berlin for herself and Hintz within a week, an almost impossible task. For the first time in his life, Hintz commits an act of selflessness. Unbeknownst to Trixie, he decides to enter a retirement home, intending to relieve her of his "burden."