A tour guide meets an attractive woman who has somehow lost her memory. After becoming her friend and protector, he becomes involved in a series of attacks on the woman's life. Miriam is the only witness to the criminal activities of a Dutch engineer, Van Daalem. After discovering his plans, will Miriam and John be able to put an end to them? Comedy adventure, starring Giuliano Gemma, Ursula Andress and Jack Palance