Yakumo and her friends are tasked with caring for a giraffe. Thinking he needs exercise, she takes him on a nighttime walk with Sarah. Touched by Yakumo's kindness, the giraffe suddenly recalls his long-lost master—and bolts into the night! Chaos—and a strange kind of party—ensues.

Mr. Sasakura announces his first solo art exhibition. When the boys hear Ms. Itoko is posing as a nude model, excitement ripples through the class. But the shock intensifies when they learn Tenma and Yakumo will model too! As the day of the exhibit arrives, emotions run high and tempers flare.