In 12 Hours Che Noir tells a story about betrayal and violence driven by mistrust in a relationship. The story told in the song centers on Che who is initially excited to go out with her friends, but as the narrative progresses, she discovers compromising messages between her partner and her best friend, Lisa. This leads her into a state of distrust and distress.

As the song progresses, the protagonist reacts violently to the perceived betrayal by her partner, even going so far as murder driven by anger and betrayal. The theme of betrayal and violence in the context of a love relationship is a central part of the story told in the song. The song illustrates how mistrust and betrayal can lead to extreme and destructive consequences in a relationship.