"A message from Youko’s sister sends Youko and Airi to the university town of Tsukuba to get some much-needed maintenance done and check out the planetarium. Then after a stop to stretch their legs at Lake Kasumigaura, the two are off to Mobility Resort Motegi--a motorsport mecca featuring a full racing circuit! But does their little electric Serow pack enough horsepower to tear up the track?"--Back cover.