Hour of the Wolf movie plot

This is a strange story. The painter John and his wife Irma live on a desolate island. The painter is often troubled by grotesque dreams. When he wakes up, he always draws dreams on a sketchbook. The wife ran into an old elven woman one day and urged her to read John’s diary. After reading it, she discovered her husband’s secret. Later, the castle owner, Mei Kan, described in the diary, asked them to be a guest and found it in the castle. These people have appeared in the husband's sketchbook. On the way home, Elma begged her husband to stay away from those people, but the painter left without saying a word. When he returned home, the painter admitted to his wife that he had killed a child on the cliff. The next day, the mysterious visitor in the castle returned to John’s house and tempted John to come to the castle again. He saw the devil’s ritual and fell into a situation where he couldn’t help himself. Outside the castle, Irma looked for John in vain, but she found his relics, but lost him forever .