Each level represents a stage in the career of Mohammad Mossadegh, the democratically elected prime minister of Iran who was overthrown in a CIA-orchestrated coup in 1953. Or rather, each level is a small physics puzzle in which you, as Mossadegh's cat, must do something to advance the game to the next level; the actions you take, their effect on the scene, and the response of Mossadegh is wholly unrelated to the supposed nature of the events that the scene ostensibly represents.
The graphics of the game are starkly beautiful, drawn from museums, photos, and other visuals, often recombined in odd ways (why, precisely, does Truman have the head of a rabbit)? The intent seems to be to represent the depth and beauty of Persian culture in a somewhat surreal fashion, and in this, the game succeeds. The scenes in Mossadegh's life progress backward, with the first representing his death, something that is never metaphorically explained. The puzzles themselves are sometimes difficult to accomplish, requiring a degree of split-second timing and are, to my mind, inadequately clued, although there's a video walkthrough available.
On the whole it is a nicely polished work, although to my mind somewhat oddly conceived; as with so many "serious" games, it is a marriage of a serious theme with a gameplay mechanic that is wholly irrelevant to the theme itself, which strikes me as of dubious value. If a game expresses your ideas no better, and indeed worse, than an essay or filmed documentary on the subject, why choose a game to express them?
People working in the realms of serious games and games for change are still evidently grappling with the question of how to use games to achieve their goals, and this game is an interesting attempt to solve that difficult problem -- even if, to my mind, it ultimately fails in doing so.