Sudden, rapid aging wreaks havoc in Nene's and Kou's school lives. Hanako identifies the culprit as a fellow Wonder: the three Clock Keepers, rumored to control time at Kamome Academy. The trio set out to punish the offending apparition, but they'll have to find them first.

Nene doesn't have long to live. While Kou struggles with the revelation, Nene goes about her day none the wiser. Only she can't seem to find Hanako.