Neukölln, a trendy Berlin neighborhood. Flats are rare, nothing works without credit ratings, proof of income or a bank guarantee. Thies knows the game – he works for a real estate management company and oversees compliance with the rules. Until he meets Bruno and Sonja. On the sly, he arranges a free apartment for the odd siblings. And starts an affair with the brother. Step by step, he delves deeper into the “siblings’” secret.