Everything is actually perfect: Charlotte is a successful doctor in a hospital in Brussels and the mother of a son. She is married to Max, an understanding man and architect. But Charlotte rents a second apartment of her own and begins a double life. She invites a variety of men into this forbidden realm. She feels their shapeless, hairy and old bodies and lives out her secret desires with them. When the two lives accidentally come into contact with each other, Charlotte loses her footing and her marriage falls into crisis. The couple try to make a fresh start in India.
Dutch director Nanouk Leopold tells her story, which she named after the physicist Robert Brown, the discoverer of molecular random movements, as a triptych in strictly composed images. In the three parts - the experiment, the crisis and the reconciliation - she reveals an unconditional longing for physical self-awareness and reflects on the relationship to the other and the question of what keeps a couple together in the long term. Nanouk Leopold, born in Rotterdam in 1968, studied at the Dutch Film and Television Academy and at the Academy of Visual Arts in Rotterdam. She directed the highly acclaimed feature films Guernsey (2005) and Wolfsbergen (2007), among others.