The Key deals with the struggles for personal, uncompromised freedom in the face of responsibilities to others. The story follows, Satan, the representation of the uncontrolled side of the psyche, striving to escape from his imprisonment in Hell in order to return to his life not forgotten in Heaven. Between him and the way out is Sin, a figure from his past who holds the key to his desires. The character of Sin, who is Satanâs daughter, is the guardian of the human impulse; a guard who, in the story, releases the âimpulseâ. The film explores the humanity and the desperation of the two characters, asking, can we survive without a dark side?