An unnamed young woman (Patricia Healey) who is bored working in a London office takes a train to Manchester and ends up inexplicably deciding to board a white tourist bus that is packed with an eclectic assortment of international eccentrics. The bus stops at various locations including factories and the group is escorted about by the Lord Mayor (Arthur Lowe) who is decked out in full regalia.
Mikolás and his brother Adam rob travelers for their tyrannical father Kozlík. During one of their "jobs" they end up with a young German hostage whose father escapes to return news of the kidnapping and robbery to the King.
Broadway producer, Max Bialystock and his accountant, Leo Bloom plan to make money by charming little old ladies to invest in a production many times over what it will actually cost, and then put on a sure-fire flop, so nobody will ask for their money back – and what can be a more certain flop than a tasteless musical celebrating Hitler.