Luka sees a jewel she desperately wants, but to her displeasure a little girl buys it before she can get her hands on it. Suddenly, the girl's father approaches Luka. He'll give her the jewel if she comes and works in his house, and so she is invited.
Within the house there seems to be a treasure, as the Zangyack are targeting it as well. For the sake of doing some recon, and protecting a potential treasure, and also for selfish reasons, Luka decides to take the job. But can Luka really do said job? And what is the treasure the Zangyack are looking for?
買出しの途中に寄道して、宝石を物色するルカ。お気に入りの一品を見つけたと思いきや、横から店ごと買うという超大金持ちのお嬢様・春日井小牧が現れる。お金の価値を分かっていないと憤慨していると、その我儘ぶりに手を焼いていた父親が、娘の世話係になればさっきの宝石をやると声をかけて…
