The not-so-distant future, Asticassia High School, Kanagawa Japan. A transfer student named Suletta happens to meet Miorine, the daughter of a prominent local family. With Miorine unable to find her dream for the future, Suletta makes her a proposal. -

"Wanna help me fill out my list of things I wanna do?"

These two girls and their friends spend their glory days exploring new frontiers!