A murder in Frankfurt's Westend, a confessed perpetrator without motive, a powerful energy company - and an idiosyncratic old-school investigator. 'False Promises' is a gripping case for Commissioner Uwe Fähndrich. A management consultant, shot dead in his villa - Uwe Fähndrich has a corpse and a confessed perpetrator. Nevertheless, nothing seems to fit together in this case. Until he comes across the murdered man's employer during his research: Liquid Lights. An energy giant and pioneer in the production of hydrogen, which is repeatedly criticized for its business practices - and is inviting big politicians to the hydrogen summit in Frankfurt these days. Fähndrich senses a connection and turns to prosecutor Vogelsang. Together they realize that the case is much bigger than thought - and reaches into the back rooms of the powerful. When an attack on the alleged perpetrator is carried out in the prison shortly afterwards, the situation comes to a head dramatically. And Fähndrich has to decide how far he is willing to go in this case.