On a night excursion to the castle of Eulenstein, Karl, Hannes and Sophie encounter The Little Ghost, who wakes for precisely one hour after the clock strikes midnight. Despite the warnings of a friend, Mr. Tu-Whit Tu-Whoo, the little ghost would love to see the world by daylight, if only once. Filled with amazement and joy. The Little Ghost wakes the following day at twelve o'clock - noontime!! However, The Little Ghost is discoloured black by the first sunray, which causes quite a commotion as the town's inhabitants become scared. The little ghost realises his new wake up time is not as fun as expected, and when chased by the police, he asks the children for help.