Ruben Brandt, a famous psychotherapist, is forced to steal 13 paintings from world-renowned museums and private collections to prevent his suffering from terrible nightmares. Accompanied by four of his patients, he and his gang of thieves strike regularly and with great success: The Louvre, Tate, Uffizi, Hermitage, MoMA. ’The Collector' quickly becomes the most wanted criminal. Gangsters and headhunters chase him around the world while the reward for his capture keeps rising, approaching a hundred million dollars. A carter of insurance companies entrusts Mike Kowalski, a private detective and leading art theft expert, to solve the case.