This story tells of the friendship between a young villager who arrives in medieval Prague, Jemmy and his Goat. The important conflict comes up when Jemmy falls in love with Katy a street-wise girl from Prague. Goat is jealous, and starts to hate Katy. Jemmy works on the construction of the Charles Bridge, and later he helps Master Hanus, who is creating an Astronomical clock for the City of Prague. The work with Master Hanus allows Jemmy to meet and date Katy, who is a maid in Master Hanuss house.
Having finished the Astronomical clock, Master Hanus is blinded by greedy Aldermen who don't want him to be able to create another monumental Clock. Blind Master Hanus, with help from Katy, disables the clock but soon afterwards, he dies. If Jemmy wants to save Katy from execution, he must repair and correctly set the Astronomical Clock as soon as possible. And Goat is always jealous
Love and friendship between a man and an animal blend together with the story of a poor student, Matthias, from the mysterious Fausts House. Greed and the assignment of Matthias soul to the Devil represent a chief contrast to the love and friendship between Goat, Jemmy and Katy.
This comic story is narrated from a modern point of view and with a gentle sense of humour. However, the medieval mystery and genius loci of the City of Prague is preserved. Very famous and also lesser-known legends are combined with the characters to make a compact comic story.
