The highly anticipated school trip for the second-year students of Lilian Girls' Academy is finally here! With a sense of regret about being separated from their sisters, Yumi, Yoshino, and Shimako board a plane bound for Japan. Their destination is Italy, a country known for its food and culture, and also the heart of Catholicism! During their 7-night, 9-day tour of Italy, by chance, the three members of the Saint Lily Society, along with Tsutago and Mami, end up in the same group. With this combination of members, there's a feeling that something exciting is about to happen?! Breaking away from their daily lives, this is a school trip filled with unique experiences for the girls!