Ultra-cute tsundere Lieselotte and overpowered airhead Fiene are spending summer vacation at Riefenstahl Manor when the place is suddenly raided by Fiene's mother, Elizabeth. Her attack reveals a shocking truth that nobody saw coming!

In the real world, Endo and Kobayashi are growing closer. At last, it's time for them to go on a date—but they're interrupted before it even begins. What could this stranger possibly want?

Meanwhile, a dark shadow closes in on Lieselotte... Is everything really as peaceful as it appears?!