While tidying up the house, Keiichi discovers a notebook of his grandfather that contains a picture of a mysterious girl and a treasure map. Excited by the prospect of an adventure, Urd and Skuld are itching to go with Keiichi to find the loot, but tight funds mean the Auto Club's annual camping trip takes priority. What's more, the young maid hosting the group is convinced that a promise made with Keiichi ties the two together! To make matters worse, Peorth is determined to make Morisato confess his true feelings for Belldandy. Will Keiichi ever be able to say 'I love you', or is the pressure too much for him to handle?