The document analyzes Katy Perry's music video for "Last Friday Night" using several literary and film theories. It begins with an analysis using Roland Barthes' theory of the enigma, noting that the video tells the story of the previous night through flashbacks to draw the audience in. It then discusses the nonlinear narrative structure, with flashbacks showing what happened at the party. Finally, it analyzes the video in terms of Vladimir Propp's character archetypes, identifying the main character as the "princess" and other characters as the "hero" and "helper."