In the fourth installment of the Golden Rose series, a young princess must embark on a journey to save her kingdom from the clutches of an evil warlock who has unleashed his black magic. With the help of her talking horse and a brave young knight, she must face dangerous obstacles and discover the power of love and friendship.

Francesco and Elena, Roberto and Flavia, Thomas and Virginia, make up a fixed and tight-knit company for three years now, they are all living in Rome and come from good families. Elena and Francesco are two twenty-five and to be married, Roberto and Flavia are twenty years and in love with the impetus of youth; Tommaso and Virginia are two singles that have in common the fact that they feel out of lace in the world. The union of these characters will be shocked by the death of Francesco as a result of a car accident, the loss of his friend upset the lives of everyone.

A young girl swimmer, involved in an organisation with the aim of protecting dolphins, is engaged in an action against the local fishermen whose nets are endangering the creatures. She develops a rapport with some rescued dolphins, joining them in the society's tank, surprising other members with her ability to hold her breath for long periods. Following the death of a colleague, with whom she was in love, She decides to publicise the situation by breaking a world free-diving record.