Lisa, once a brilliant playwright, no longer writes. She lives with her family in Switzerland, but her heart remains in Berlin, beating in time with that of her twin brother Sven, the famous theatre actor, the relationship between them even close since Sven was diagnosed with aggressive leukemia.

Lisa does not want to accept this blow of fate, so she does everything in her power to bring Sven back to the stage, neglecting everything else in her life, including her husband. Her marriage goes awry, but Lisa only has eyes for her brother, who reflects her deepest longings and awakens in her the desire to be creative, to feel alive again.