Publicly criticizing the Catholic Church, Jan Hus opposes the sale of indulgences in his sermons in the Bethlehem Chapel.

The ailing king, who is being pressured by the Pope and his brother Holy Roman Emperor Sigismund because of Hus's sermons, prefers to have fun rather than politics and worries.

After further pressure from the Pope and the Emperor, when both even threatened to declare a crusade, Jan Hus finally acceded to their call and went to Constance, where a church council was convened.

Hus, accompanied on the way by Jan from Chlum and Václav from Dubá, arrives in the city on the shores of Lake Constance without any problems.

Upon arrival, however, he is immediately arrested under the pretext of a conversation with the cardinals, which arouses the indignation of the Czech people and nobility, who send a letter of complaint to King Sigismund.

Before being cremated, he says goodbye to his friends Jan z Chlumu and Václav z Dubé, exhorts those present not to listen to their bad ecclesiastical and secular authorities, and for the last time refuses the chance to appeal.