It's summer vacation for the students at Lillian Girls' Academy. Yumi is excited to visit Sachiko's home, but the relaxing trip may be spoiled when she meets some of Sachiko's snobby childhood pals, during the third season of this anime series. The wealthy mean girls don't think Yumi is glamorous enough to have Sachiko as her mentor, so they set out to ensure the two friends have an unpleasant summer.