The seventh book in the adventure series by the most beloved children's author in the world. The four inseparable friends, Philip, Jack, Dinah, and Lucy-Ann, are preparing to spend their holidays in a quiet picturesque village. This year, they will also have to host a boy named Gustavo. But is that the boy's real name? What secret does he hide, and why does he behave so strangely? Suddenly, the children find themselves entangled in the intrigues and schemes of a distant, exotic kingdom. While trapped in a tall tower in a foreign country, Jack manages to escape, and along with his beloved parrot, they follow a wandering circus. There, he will meet clowns, animal tamers, acrobats, and with their help, he will try to save his friends. Palaces, spies, princes, and kings... Are you ready for... adventure?