A mental institution's resident physician, Dr. Cohen, facilitates therapy sessions where patients who think they're prominent Nazi figures reenact their fantasies. The sessions depict Hitler amassing power with his loyal followers, but are occasionally disrupted, such as when a patient's uniform is being cleaned or a patient who believes he's Picasso unexpectedly joins in.
Snide and Prejudice
In a mental institution, patients are allowed to live out their delusions, leading "Hitler" to attempt to assert his authority among the other patients, who all believe they are historical members of the German Nazi Party.