The story took place in Antwerp in the 10 century. Elsa was accused of murdering her brother gottfried, the heir to the Duke of Brabant. The mysterious knight appeared under the guidance of the swan, who was willing to fight for Elsa's chastity. He asked Elsa to promise never to ask about his name, background and past. He defeated Count Tramon, who accused Elsa, and won her personal promise. Tramon's wife, Otterud, has evil magic, and she planted the seeds of suspicious knights in Elsa's heart. Elsa couldn't help breaking her promise and asking some taboo questions on her wedding night, which also ruined her happiness. Now, the knight must leave. Before he left, he publicly declared himself a knight of the Holy Grail, anglin. He will be released from the bondage of Otterud's gottfried magic and become a swan, so that Elsa and his sister can meet again, but he must return to the Holy Grail city of Mon Chawat and continue to protect the Holy Grail.

Playing time: 9 minutes for the prelude, 50 minutes for the first act, 1 hour for the second act and 55 minutes for the third act.

Time: The story took place at the beginning of 10 century.

Venue: Antwerp