SYNOPSIS: Once upon a time in Brittany was a legendary city called YS built in the middle of the sea and protected by a great wall sealed by huge doors which prevented the waves from entering the city. This city was ruled by a king, Gradlon who had given the key to his daughter, the princess Dahut.Every evening, the princess asked the sea to bring her a sailor for the night. She slept with him, killed him and sent him back to the sea. The king kept seeing his daughter like a perfect young lady.