London, 1977. Young punk Enn along with his friends John and Vic accidentally go to a strange party of foreign exchange students. At home, Enn meets a beautiful and mysterious Zan, who wants the boy to "show her" punk. A 24-hour adventure begins, full of music, partying and destruction of public property. The hero falls in love with a girl who is really an alien, and the alleged foreign exchange turns out to be from another galaxy.