Are high-school girls Nanoha and Chidori ready to face the storms in their new romantic relationship together?

Nanoha and Chidori are best friends who attend the same all-girls high school—and also share a heart-pounding secret: they’re lovers. Through sunny days and tumultuous storms, they’re always ready for new adventures together.

Amidst Chidori and Nanoha’s anxieties about what comes after graduating, their one-year anniversary arrives. With a perfect plan for their date, nothing can get in their way! Except everything that can go wrong does. Can Chidori and Nanoha figure out how to salvage what’s left of their precious day?