In 1974 Wales, 13-year-old Petra and her friend, Sharon, are obsessed with a contest whose winners will be flown to America to meet their teen idol, David Cassidy. In 1998 London, Petra is pushing 40 and on the brink of divorce. While cleaning out her mother's closet, she finds a letter her mother had intercepted declaring her the winner of the contest. The girls reunite for an all-expenses-paid trip to Las Vegas to meet their teen idol at last.