Step right up for the most sensational cruise in the galaxy!The TARDIS lands on board a luxury space liner owned by the interstellar shipping magnate, Marilyn Moon. The Moon Cruise offers its wealthy passengers up-close views of astounding cosmic wonders and the Doctor and Belinda are soon high rolling it on the top deck. But there is a sinister side to life on board. What is the secret of the smiling, blonde-haired mannequins? What happens to the cruise ship workers when they go off shift? The Doctor soon learns that not all prisons come with bars on the windows, while Belinda faces one of the greatest cruelties in the universe - a zero-pay contract in retail and hospitality that can never be broken...