Elle Fanning, Ruth Wilson, Matt Lucas and Nicole Kidman star in this romantic comedy. Set in 1970\'s London, young Enn heads to a party thrown by local punk Queen Boadicea. While there, he meets foreign exchange student Zan and immediately falls for her. However, when Enn discovers that Zan is actually an alien who has come to study Earth, he soon finds himself having to recruit Queen Boadicea and her followers in a desperate bid to save her from an uncertain fate.