The academic year is coming to an end at knight school, and that means it's time for the graduation ball! Serephione is ready to give her senior friends Elise and Sasara a big send-off, but when she steps outside for a little fresh air, she finds a surprise visitor: Emperor Gillain himself. Soon after, Trundle Guild hands her a special escort mission that only she can tackle. But this mission won't just take her dangerously close to the magic academy-it will put her right in the middle of another nation's political conflict.